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QDENGA powder and solvent for injectable solution in pre-filled syringe

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Doctor

Antonio Cayatte

General medicine 44 years exp.

Dr Antonio Cayatte is a physician in General and Acute Medicine with over 30 years of experience across clinical care, medical research, and education. He offers online consultations for adults with a wide range of symptoms, both acute and chronic. His clinical background includes: 

  • assessment of sudden or unclear symptoms
  • ongoing care for chronic conditions
  • follow-up after hospital discharge
  • interpretation of test results
  • medical support while abroad

Dr Cayatte earned his degree from the University of Lisbon and taught internal medicine at Boston University School of Medicine. He holds active medical registrations in both Portugal and the UK and is a Fellow of the American Heart Association. Consultations are available in English and Portuguese. Patients value his clarity, professionalism, and balanced approach to evidence-based care.

Dr. Antonio Cayatte provides comprehensive care for a broad spectrum of common health concerns, including:

  • Respiratory & ENT: acute bronchitis, concerns related to pneumonia, sinusitis, tonsillitis, ear infections, sore throat conditions, and allergic rhinitis
  • Eye Health: allergic and infectious conjunctivitis, as well as red or irritated eyes
  • Digestive & Urinary: gastroesophageal reflux disease (GERD), gastritis, urinary tract infections, and cystitis
  • Chronic Conditions: hypertension, elevated cholesterol, and structured weight management planning
This page is for general information. Consult a doctor for personal advice. Call emergency services if symptoms are severe.
About the medicine

How to use QDENGA powder and solvent for injectable solution in pre-filled syringe

Translated with AI

This page provides general information and does not replace a doctor’s consultation. Always consult a doctor before taking any medication. Seek urgent medical care if symptoms are severe.

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Introduction

Package Leaflet: Information for the User

Qdenga Powder and Solvent for Solution for Injection in Pre-filled Syringe

Tetravalent Dengue Vaccine (Live, Attenuated)

This medicinal product is subject to additional monitoring, which will allow for the quick identification of new safety information. You can help by reporting any side effects you may get. The last section of the leaflet includes information on how to report side effects.

Read all of this leaflet carefully before you or your child are vaccinated because it contains important information for you.

  • Keep this leaflet, you may need to read it again.
  • If you have any further questions, ask your doctor, pharmacist, or nurse.
  • This medicine has been prescribed for you or your child only. Do not pass it on to others.
  • If you or your child get any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. See section 4.

Contents of the Pack

  1. What Qdenga is and what it is used for
  2. What you need to know before you or your child receive Qdenga
  3. How Qdenga is administered
  4. Possible side effects
  5. Storage of Qdenga
  6. Contents of the pack and other information

1. What Qdenga is and what it is used for

Qdenga is a vaccine. It is used to help protect you or your child against dengue. Dengue is a disease caused by serotypes 1, 2, 3, and 4 of the dengue virus. Qdenga contains weakened versions of these 4 serotypes of the dengue virus, so it cannot cause the disease.

Qdenga is administered to adults, adolescents, and children (from 4 years of age).

Qdenga should be used in accordance with official recommendations.

How the vaccine works

Qdenga stimulates the body's natural defenses (immune system). This helps protect against the viruses that cause dengue if the body is exposed to these viruses in the future.

What is dengue

Dengue is caused by a virus.

  • The virus is transmitted through mosquitoes (Aedes mosquitoes).
  • If a mosquito bites a person with dengue, it can transmit the virus to the next people it bites.

Dengue is not transmitted directly from person to person.

The signs of dengue include fever, headache, pain behind the eyes, muscle and joint pain, sensitivity or discomfort (nausea and vomiting), swelling of the lymph nodes or skin rash. The signs of dengue usually last from 2 to 7 days. You or your child may also be infected with the dengue virus but not show signs of illness.

Occasionally, dengue can be severe enough for you or your child to need hospitalization, and in rare cases, it can cause death. Severe dengue can cause high fever and any of the following symptoms: severe abdominal pain, persistent nausea (vomiting), rapid breathing, severe bleeding, stomach bleeding, gum bleeding, fatigue, restlessness, coma, seizures, and organ dysfunction.

Doctor consultation

Not sure if this medicine is right for you?

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2. What you need to know before you or your child receive Qdenga

To ensure that Qdenga is suitable for you or your child, it is important that you inform your doctor, pharmacist, or nurse if any of the following points apply to you or your child. If there is anything you do not understand, ask your doctor, pharmacist, or nurse to explain.

Do not use Qdenga if you or your child

  • are allergic to the active substances or any of the other ingredients of Qdenga (listed in section 6).
  • have had an allergic reaction after receiving Qdenga in the past. The signs of an allergic reaction can include an itchy rash, difficulty breathing, and swelling of the face and tongue.
  • have a weakened immune system (the body's natural defenses). This can be due to a genetic defect or an HIV infection.
  • are taking a medicine that affects the immune system (such as high doses of corticosteroids or chemotherapy). Your doctor will not use Qdenga until 4 weeks after you stop treatment with this medicine.
  • are pregnant or breastfeeding.

Do not use Qdenga if any of the above apply.

Warnings and precautions

  • Tell your doctor, pharmacist, or nurse before receiving Qdenga if you or your child:
  • have a feverish infection. Vaccination may need to be postponed until recovery.
  • have ever had health problems when given a vaccine. Your doctor will carefully weigh the risks and benefits of vaccination.
  • have ever fainted after an injection. Fainting, dizziness, and occasionally falls (especially in young people) can occur after or even before any injection with a needle.

Important information about the protection provided

As with any vaccine, Qdenga may not protect all those who receive it, and protection may decrease over time. You or your child can still get dengue from mosquito bites, including severe dengue. You or your child should continue to protect themselves against mosquito bites even after vaccination with Qdenga.

After vaccination, you or your child should consult a doctor if you or your child think you or your child may have a dengue infection and have any of the following symptoms: high fever, severe abdominal pain, persistent vomiting, rapid breathing, bleeding gums, fatigue, restlessness, and blood in the vomit.

Other protective measures

You or your child should take precautions to avoid mosquito bites. This includes using insect repellents, protective clothing, and mosquito nets.

Young children

Children under 4 years of age should not receive Qdenga.

Other medicines and Qdenga

Qdenga can be administered with the hepatitis A vaccine, the yellow fever vaccine, or the human papillomavirus vaccine at a different injection site (a different part of the body, usually the other arm) during the same visit.

Tell your doctor or pharmacist if you or your child are using, have recently used, or might use any other medicine or vaccine.

In particular, tell your doctor or pharmacist if you or your child are taking any of the following substances:

  • Medicines that affect the body's natural defenses (immune system) such as high doses of corticosteroids or chemotherapy. In this case, your doctor will not use Qdenga until 4 weeks after you stop treatment. This is because Qdenga may not work as well.
  • Medicines called "immunoglobulins" or blood products that contain immunoglobulins, such as blood or plasma. In this case, your doctor will not use Qdenga until 6 weeks and preferably 3 months after you stop treatment. This is because Qdenga may not work as well.

Pregnancy and breastfeeding

Do not use Qdenga if you or your daughter are pregnant or breastfeeding. If you or your daughter:

  • are of childbearing potential, you or your daughter should take precautions to avoid becoming pregnant for a month after vaccination with Qdenga.
  • think you or your daughter might be pregnant or are planning to have a baby, ask your doctor, pharmacist, or nurse for advice before using Qdenga.

Driving and using machines

Qdenga has a minor influence on the ability to drive and use machines in the first few days after vaccination.

Qdenga contains sodium and potassium

This medicine contains less than 1 mmol of sodium (23 mg) per 0.5 ml dose; i.e., it is essentially "sodium-free".

This medicine contains less than 1 mmol (39 mg) of potassium per 0.5 ml dose; i.e., it is essentially "potassium-free".

3. How Qdenga is administered

Qdenga is administered by a doctor or nurse as an injection under the skin (subcutaneous injection) in the upper arm. It must not be injected into a blood vessel.

You or your child will receive 2 injections.

The second injection is administered 3 months after the first.

There are no data in adults over 60 years of age. Consult your doctor to see if Qdenga is beneficial for you.

Qdenga should be used in accordance with official recommendations.

Instructions for preparation of the vaccine for doctors and healthcare professionals are at the end of the leaflet.

If you or your child miss a Qdenga injection

  • If you or your child miss a scheduled injection, the doctor will decide when to administer the missed injection. It is important that you or your child follow the doctor's, pharmacist's, or nurse's instructions regarding the follow-up injection.
  • If you forget or are unable to return at the scheduled time, ask your doctor, pharmacist, or nurse for advice.

If you have any further questions on the use of this vaccine, ask your doctor, pharmacist, or nurse.

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible side effects

Like all medicines, Qdenga can cause side effects, although not everybody gets them.

Severe allergic reaction (anaphylactic)

If any of the following symptoms occur after leaving the place where you or your child received an injection, contact a doctor immediately:

  • difficulty breathing
  • blue-tinged lips or tongue
  • rash
  • swelling of the face or throat
  • low blood pressure that causes dizziness or fainting
  • sudden and severe feeling of discomfort or restlessness, accompanied by a drop in blood pressure that causes dizziness and loss of consciousness, as well as rapid heartbeat associated with difficulty breathing

These signs or symptoms (anaphylactic reactions) usually occur soon after administration of the injection and while you or your child are still in the medical center or doctor's office. They can also occur very rarely after receiving any vaccine.

The following side effects have occurred during studies in children, adolescents, and adults.

Very common(may affect more than 1 in 10 people):

  • pain at the injection site
  • headache
  • muscle pain
  • redness at the injection site
  • feeling unwell
  • weakness
  • infections of the nose or throat
  • fever

Common(may affect up to 1 in 10 people):

  • swelling at the injection site
  • pain or swelling of the nose or throat
  • bruising at the injection site
  • itching at the injection site
  • swelling of the throat and tonsils
  • joint pain
  • flu-like illness

Uncommon(may affect up to 1 in 100 people):

  • diarrhea
  • nausea
  • stomach pain
  • vomiting
  • bleeding at the injection site
  • feeling dizzy
  • itching of the skin
  • skin rash, including skin rashes with spots or itching of the skin
  • hives
  • fatigue
  • change in skin color at the injection site
  • inflammation of the airways
  • runny nose

Rare(may affect up to 1 in 10,000 people):

  • rapid swelling under the skin in areas such as the face, throat, arms, and legs

Frequency not known(cannot be estimated from the available data):

  • sudden and severe allergic reaction (anaphylactic) with difficulty breathing, swelling, fainting, rapid heartbeat, sweating, and loss of consciousness

Other side effects in children from 4 to 5 years of age:

Very common(may affect more than 1 in 10 people):

  • decreased appetite
  • feeling sleepy
  • irritability

Reporting of side effects

If you experience any side effects, talk to your doctor, pharmacist, or nurse, even if it is possible side effects not listed in this leaflet. You can also report side effects directly through the national reporting system listed in Appendix V. By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storage of Qdenga

Keep Qdenga out of the sight and reach of children.

Do not use Qdenga after the expiry date stated on the carton after EXP. The expiry date is the last day of the month shown.

Store in a refrigerator (between 2°C and 8°C).

Do not freeze.

Store the vaccine in the outer packaging.

After mixing (reconstitution) with the supplied solvent, Qdenga should be used immediately. If not used immediately, Qdenga must be used within 2 hours.

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. This will help protect the environment.

6. Contents of the pack and additional information

What Qdenga contains

  • After reconstitution, one dose (0.5 ml) contains:

Dengue virus serotype 1 (live, attenuated)*: ≥ 3.3 log10 PFU**/dose

Dengue virus serotype 2 (live, attenuated)#: ≥ 2.7 log10 PFU**/dose

Dengue virus serotype 3 (live, attenuated)*: ≥ 4.0 log10 PFU**/dose

Dengue virus serotype 4 (live, attenuated)*: ≥ 4.5 log10 PFU**/dose

  • Produced in Vero cells using recombinant DNA technology. Genes of the specific surface proteins of each serotype, inserted into the skeleton of dengue type 2. This product contains genetically modified organisms (GMOs).

# Produced in Vero cells by recombinant DNA technology.

** PFU = plaque-forming units

  • The other ingredients are: a,a-trehalose dihydrate, poloxamer 407, human serum albumin, potassium dihydrogen phosphate, sodium dihydrogen phosphate, potassium chloride, sodium chloride, water for injectable preparations.

Appearance of Qdenga and pack contents

Qdenga is a powder and solvent for solution for injection. Qdenga is supplied as a powder in a single-dose vial and a solvent in a pre-filled syringe with 2 separate needles or without a needle.

The powder and solvent must be mixed before use.

Qdenga powder and solvent for solution for injection in a pre-filled syringe are available in packs of 1 or 5.

Only certain pack sizes may be marketed.

The powder is a compact white to off-white suspension.

The solvent (0.22% sodium chloride solution) is a colorless and transparent liquid.

After reconstitution, Qdenga is a transparent solution, colorless to pale yellow, essentially free from foreign particles.

Marketing authorisation holder and manufacturer

Marketing authorisation holder

Takeda GmbH

Byk-Gulden-Str. 2

78467 Konstanz

Germany

Manufacturer

Takeda GmbH

Production site Singen

Robert-Bosch-Str. 8

78224 Singen

Germany

For further information on this medicinal product, please contact the local representative of the marketing authorisation holder:

België/Belgique/Belgien

Takeda Belgium NV

Tél/Tel: +32 2 464 06 11

[email protected]

Lietuva

Takeda, UAB

Tel: +370 521 09 070

[email protected]

Text in Cyrillic alphabet showing 'Bulgaria', 'Takeda Bulgaria' and a phone number with country code

[email protected]

Luxembourg/Luxemburg

Takeda Belgium NV

Tél/Tel: +32 2 464 06 11

[email protected]

Ceská republika

Takeda Pharmaceuticals Czech Republic s.r.o.

Tel: +420 234 722 722

[email protected]

Magyarország

Takeda Pharma Kft.

Tel: +36 1 270 7030

[email protected]

Danmark

Takeda Pharma A/S

Tlf.: +45 46 77 10 10

[email protected]

Malta

Takeda HELLAS S.A.

Tel: +30 210 6387800

[email protected]

Deutschland

Takeda GmbH

Tel: +49 (0) 800 825 3325

[email protected]

Nederland

Takeda Nederland B.V.

Tel: +31 20 203 5492

[email protected]

Eesti

Takeda Pharma AS

Tel: +372 6177 669

[email protected]

Norge

Takeda AS

Tlf: 800 800 30

[email protected]

Ελλáδα

Takeda ΕΛΛΑΣ Α.Ε.

Τηλ: +30 210 6387800

[email protected]

Österreich

Takeda Pharma Ges.m.b.H.

Tel: +43 (0) 800-20 80 50

[email protected]

España

Takeda Farmacéutica España S.A.

Tel: +34 917 90 42 22

[email protected]

Polska

Takeda Pharma sp. z o.o.

Tel: +48 22 306 24 47

[email protected]

Francia

Takeda France SAS

Tél: +33 1 40 67 33 00

[email protected]

Portugal

Takeda Farmacêuticos Portugal, Lda.

Tel: +351 21 120 1457

[email protected]

Hrvatska

Takeda Pharmaceuticals Croatia d.o.o.

Tel: +385 1 377 88 96

[email protected]

Ireland

Takeda Products Ireland Ltd.

Tel: 1800 937 970

[email protected]

România

Takeda Pharmaceuticals SRL

Tel: +40 21 335 03 91

[email protected]

Slovenija

Takeda Pharmaceuticals farmacevtska družba d.o.o.

Tel: +386 (0) 59 082 480

[email protected]

Ísland

Vistor hf.

Sími: +354 535 7000

[email protected]

Slovenská republika

Takeda Pharmaceuticals Slovakia s.r.o.

Tel: +421 (2) 20 602 600

[email protected]

Italia

Takeda Italia S.p.A.

Tel: +39 06 502601

[email protected]

Suomi/Finland

Takeda Oy

Puh/Tel: 0800 774 051

[email protected]

Κúπρος

Takeda ΕΛΛΑΣ Α.Ε.

Τηλ: +30 2106387800

[email protected]

Sverige

Takeda Pharma AB

Tel: 020 795 079

[email protected]

Latvija

Takeda Latvia SIA

Tel: +371 67840082

[email protected]

United Kingdom (Northern Ireland)

Takeda UK Ltd

Tel: +44 (0) 3333 000 181

[email protected]

Date of last revision of this leaflet: October 2024.

Other sources of information

Detailed information on this medicinal product is available on the European Medicines Agency website: http://www.ema.europa.eu.

This information is intended for healthcare professionals only:

  • Qdenga must not be mixed with other medicinal products or vaccines in the same syringe.
  • Qdenga must not be administered as an intravascular injection under any circumstances.
  • Vaccination should be performed by subcutaneous injection, preferably in the upper arm, in the deltoid. Qdenga must not be administered as an intramuscular injection.
  • Syncope (fainting) may occur after, or even before, any vaccination as a psychogenic response to the needle injection. Procedures should be in place to avoid injury from fainting and manage syncopal reactions.

Instructions for reconstitution of the vaccine with the solvent presented in the pre-filled syringe:

Qdenga is a 2-component vaccine consisting of a vial containing the lyophilized vaccine and solvent supplied in the pre-filled syringe. The lyophilized vaccine must be reconstituted with the solvent before administration.

Qdenga must not be mixed with other vaccines in the same syringe.

To reconstitute Qdenga, use only the solvent (0.22% sodium chloride solution) in the pre-filled syringe supplied with the vaccine, as it does not contain preservatives or other antiviral substances. Contact with preservatives, antiseptics, detergents, and other antiviral substances should be avoided, as they may inactivate the vaccine.

Remove the vaccine vial and solvent from the pre-filled syringe from the refrigerator and let them stand at room temperature for approximately 15 minutes.

Hand holding syringe extracting medication from vial labeled with number one, arrow indicates direction

Vaccine vial

  • Remove the cap from the vaccine vial and clean the surface of the stopper on the top of the vial with an alcohol swab.
  • Attach a sterile needle to the pre-filled syringe and insert the needle into the vaccine vial. The recommended needle is 23G.
  • Direct the flow of the solvent towards the side of the vial while slowly pressing the plunger to reduce the possibility of bubble formation.

Hand holding syringe with needle turning and arrow indicating insertion of the needle at an angle showing number one

Reconstituted vaccine

  • Remove your finger from the plunger and, holding the assembly over a flat surface, gently agitate the vial in both directions with the syringe and needle assembly connected.
  • DO NOT SHAKE. Foam and bubbles may form in the reconstituted product.
  • Let the vial and syringe assembly stand for a time until the solution clarifies. This takes about 30 to 60 seconds.

After reconstitution, the resulting solution should be transparent, colorless to pale yellow, and essentially free from foreign particles. Discard the vaccine if particles or color changes are observed.

Hand with glove holding syringe with needle inserted into the skin, black arrow indicates direction of injection

Reconstituted vaccine

  • Withdraw the entire volume of the reconstituted Qdenga solution with the same syringe until an air bubble appears in the syringe.
  • Remove the syringe and needle assembly from the vial.
  • Hold the syringe with the needle pointing upwards, gently tap the side of the syringe to bring the air bubble to the top, discard the attached needle and replace it with a new sterile one, and expel the air bubble until a small drop of liquid forms at the top of the needle. The recommended needle is 25G, 16 mm.
  • Qdenga is ready for subcutaneous injection.

Qdenga should be administered immediately after reconstitution. Its physicochemical stability has been demonstrated during use for a period of 2 hours at room temperature (up to 32.5°C) from the time of reconstitution of the vaccine vial. After this period, the vaccine should be discarded. Do not put it back in the refrigerator. From a microbiological point of view, Qdenga should be used immediately. If not used immediately, the storage times and conditions will be the responsibility of the user.

Disposal of unused medicinal products and all waste materials should be done in accordance with local regulations.

Online doctors for QDENGA powder and solvent for injectable solution in pre-filled syringe

Discuss questions about QDENGA powder and solvent for injectable solution in pre-filled syringe, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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Doctor

Lizaveta Trafimchuk Takhvaniuk

Dermatology 10 years exp.

Dr. Lizaveta Trafimchuk Takhvaniuk graduated in Medicine and subsequently specialized in Dermatology and Venereology. She has more than 10 years of clinical experience and is licensed to practice in Spain, where she focuses on the comprehensive diagnosis and treatment of dermatological conditions.

Throughout her education and professional career, Dr. Trafimchuk has gained extensive experience in managing diseases of the skin, hair, and nails, as well as in the diagnosis, treatment, and prevention of sexually transmitted infections (STIs). Her clinical approach is based on evidence-based medicine, combined with personalized care tailored to each patient’s needs.

In her daily practice, she treats a wide range of dermatological conditions, including chronic inflammatory dermatoses such as acne, rosacea, atopic dermatitis, psoriasis, and eczema. She also has experience in treating pigmentation disorders, including melasma, post-inflammatory hyperpigmentation, and dyschromia.

She has developed a particular interest in trichology, treating various types of alopecia, chronic hair loss, and scalp disorders. In addition, she has experience in managing infectious dermatoses of fungal, viral, and bacterial origin, as well as in evaluating benign and suspicious skin lesions, with referral to specialized care when necessary.

With a strong interest in a comprehensive approach to skin health, she also treats scars, post-procedural skin changes, and conditions related to hormonal factors and aging, including those associated with pregnancy, menopause, and age-related skin changes.

Thanks to her experience and continuous professional development, Dr. Trafimchuk provides high-quality medical care that is professional, confidential, and aligned with modern dermatology standards.

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Doctor

Chikeluo Okeke

General medicine 4 years exp.

Dr Chikeluo Okeke is an internal medicine doctor with extensive international clinical experience. Originally from Nigeria, he has worked across multiple European healthcare systems and currently practises in Sweden. This professional path has given him a strong understanding of different medical approaches and the ability to work effectively with patients from diverse cultural and linguistic backgrounds.

Dr Okeke focuses on general internal medicine and adult primary care, combining clinical accuracy with careful attention to lifestyle, personal context, and everyday health concerns. His consultations are particularly well suited for people who seek medical advice online, live abroad, or need clear guidance without unnecessary complexity.

He provides online consultations covering symptom assessment, prevention, and long-term management of chronic conditions, helping patients understand what is happening and decide on appropriate next steps.

Common reasons for consultation:

  • General internal medicine concerns and initial health assessment.
  • Acute symptoms such as fever, cough, infections, pain, or weakness.
  • Chronic conditions and treatment adjustment.
  • Blood pressure issues, fatigue, metabolic concerns.
  • Preventive consultations and routine check-ups.
  • Interpretation of laboratory results and medical reports.
  • Medical advice for patients receiving care online.

Dr Okeke is known for his clear communication, calm approach, and cultural awareness. He listens carefully, explains medical decisions in a structured way, and supports patients in making informed choices about their health.

Online consultations with Dr Chikeluo Okeke offer reliable internal medicine care without geographic limitations, focused on medical relevance, clarity, and patient comfort.

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Doctor

Antonio Cayatte

General medicine 44 years exp.

Dr Antonio Cayatte is a physician in General and Acute Medicine with over 30 years of experience across clinical care, medical research, and education. He offers online consultations for adults with a wide range of symptoms, both acute and chronic. His clinical background includes: 

  • assessment of sudden or unclear symptoms
  • ongoing care for chronic conditions
  • follow-up after hospital discharge
  • interpretation of test results
  • medical support while abroad

Dr Cayatte earned his degree from the University of Lisbon and taught internal medicine at Boston University School of Medicine. He holds active medical registrations in both Portugal and the UK and is a Fellow of the American Heart Association. Consultations are available in English and Portuguese. Patients value his clarity, professionalism, and balanced approach to evidence-based care.

Dr. Antonio Cayatte provides comprehensive care for a broad spectrum of common health concerns, including:

  • Respiratory & ENT: acute bronchitis, concerns related to pneumonia, sinusitis, tonsillitis, ear infections, sore throat conditions, and allergic rhinitis
  • Eye Health: allergic and infectious conjunctivitis, as well as red or irritated eyes
  • Digestive & Urinary: gastroesophageal reflux disease (GERD), gastritis, urinary tract infections, and cystitis
  • Chronic Conditions: hypertension, elevated cholesterol, and structured weight management planning
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Doctor

Yevgen Yakovenko

General surgery 12 years exp.

Dr. Yevgen Yakovenko is a licensed surgeon and general practitioner in Spain and Germany. He specialises in general, paediatric, and oncological surgery, internal medicine, and pain management. He offers online consultations for adults and children, combining surgical precision with therapeutic support. Dr Yakovenko works with patients across different countries and provides care in Ukrainian, Russian, English, and Spanish.

Areas of medical expertise:

  • Acute and chronic pain: headaches, muscle and joint pain, back pain, abdominal pain, postoperative pain. Identifying the cause, selecting treatment, and creating a care plan.
  • Internal medicine: heart, lungs, gastrointestinal tract, urinary system. Management of chronic conditions, symptom control, second opinions.
  • Pre- and postoperative care: risk assessment, decision-making support, follow-up after surgery, rehabilitation strategies.
  • General and paediatric surgery: hernias, appendicitis, congenital conditions, both planned and urgent surgeries.
  • Injuries and trauma: bruises, fractures, sprains, soft tissue damage, wound care, dressing, referral when in-person care is required.
  • Oncological surgery: diagnosis review, treatment planning, and long-term follow-up.
  • Obesity treatment and weight management: a medical approach to weight loss, including assessment of underlying causes, evaluation of comorbidities, development of a personalised plan (nutrition, physical activity, pharmacotherapy if needed), and ongoing progress monitoring.
  • Imaging interpretation: analysis of ultrasound, CT, MRI, and X-ray results, surgical planning based on imaging data.
  • Second opinions and medical navigation: clarifying diagnoses, reviewing current treatment plans, helping patients choose the best course of action.

Experience and qualifications:

  • 12+ years of clinical experience in university hospitals in Germany and Spain.
  • International education: Ukraine – Germany – Spain.
  • Member of the German Society of Surgeons (BDC).
  • Certified in radiological diagnostics and robotic surgery.
  • Active participant in international medical conferences and research.

Dr Yakovenko explains complex topics in a clear, accessible way. He works collaboratively with patients to analyse health issues and make evidence-based decisions. His approach is grounded in clinical excellence, scientific accuracy, and respect for each individual.

If you are unsure about a diagnosis, preparing for surgery, or want to discuss your test results – Dr Yakovenko will help you evaluate your options and move forward with confidence.

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Doctor

Hocine Lokchiri

General medicine 21 years exp.

Dr. Hocine Lokchiri is a French consultant with over 20 years of experience in General and Emergency Medicine. He works with adults and children, helping patients with urgent symptoms, infections, sudden health changes and everyday medical concerns that require timely evaluation. His background includes clinical practice in France, Switzerland and the United Arab Emirates, which allows him to navigate different healthcare systems and manage a wide range of conditions with confidence. Patients value his calm, structured approach, clear explanations and evidence-based decision-making.

Online consultations with Dr. Lokchiri are suitable for many situations when someone needs quick medical guidance, reassurance or a clear next step. Common reasons for booking include:

  • fever, chills, fatigue and viral symptoms
  • cough, sore throat, nasal congestion, breathing discomfort
  • bronchitis and mild asthma flare-ups
  • nausea, diarrhoea, abdominal pain, digestive infections
  • rashes, allergic reactions, redness, insect bites
  • muscle or joint pain, mild injuries, sprains
  • headache, dizziness, migraine symptoms
  • stress-related symptoms, sleep disturbances
  • questions about test results and treatment plans
  • management of chronic conditions in stable phases
Many patients reach out when symptoms appear suddenly and cause concern, when a child becomes unwell unexpectedly, when a rash changes or spreads, or when it’s unclear whether an in-person examination is necessary. His emergency medicine background is particularly valuable online, helping patients understand risk levels, identify warning signs and choose safe next steps.

Some situations are not suitable for online care. If a patient has loss of consciousness, severe chest pain, uncontrolled bleeding, seizures, major trauma or symptoms suggesting a stroke or heart attack, he will advise seeking immediate local emergency services. This improves safety and ensures patients receive the right level of care.

Dr. Lokchiri’s professional training includes:

  • Advanced Trauma Life Support (ATLS)
  • Basic and Advanced Cardiac Life Support (BLS/ACLS)
  • Pediatric Advanced Life Support (PALS)
  • Prehospital Trauma Life Support (PHTLS)
  • eFAST and critical care transthoracic echocardiography
  • aviation medicine
He is an active member of several professional organisations, including the French Society of Emergency Medicine (SFMU), the French Association for Emergency Physicians (AMUF) and the Swiss Society of Emergency and Rescue Medicine (SGNOR). In consultations, he works with clarity and precision, helping patients understand their symptoms, possible risks and the safest treatment options.
5.0 (44)
Doctor

Dmytro Horobets

Family medicine 7 years exp.

Dr. Dmytro Horobets is a licensed family medicine physician in Poland, specialising in endocrinology, diabetology, obesity management, gastroenterology, pediatrics, general surgery, and pain medicine. He offers online consultations for adults and children, providing personalised medical support for a wide range of acute and chronic health concerns.

Areas of expertise:

  • Endocrinology: diabetes type 1 and type 2, prediabetes, thyroid disorders, metabolic syndrome, hormonal imbalance.
  • Obesity medicine: structured weight management plans, nutritional counselling, obesity-related health risks.
  • Gastroenterology: acid reflux (GERD), gastritis, irritable bowel syndrome (IBS), liver and biliary conditions.
  • Pediatric care: infections, respiratory symptoms, digestive issues, growth and development monitoring.
  • General surgery support: pre- and post-surgical consultations, wound care, rehabilitation.
  • Pain management: chronic and acute pain, back pain, joint pain, post-traumatic pain syndromes.
  • Cardiovascular health: hypertension, cholesterol control, risk assessment for heart disease.
  • Preventive medicine: regular check-ups, health screenings, long-term management of chronic conditions.

Dr. Horobets combines evidence-based medicine with a patient-centred approach. He carefully evaluates each patient’s medical history and symptoms, offering clear explanations and structured treatment plans adapted to individual needs.

Whether you need help managing diabetes, tackling weight-related health issues, interpreting lab results, or receiving general family medicine support, Dr. Horobets provides professional online care tailored to your specific health goals.

0.0 (0)
Doctor

Sviatoslav Chekhun

Oncology 13 years exp.

Dr. Sviatoslav Chekhun is a medical oncologist with international clinical and research experience, specializing in modern medical oncology and a personalized approach to cancer treatment.

Currently (since 2025), he works as a Medical Oncologist at Institut Català d’Oncologia (Girona, Spain). Previously, he completed his residency in Medical Oncology and was involved in clinical research at Hospital Universitari Germans Trias i Pujol.

Dr. Chekhun has a strong academic and scientific background. He served as a lecturer in Internal Medicine at O.O. Bohomolets National Medical University and conducted research in experimental oncology at the R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology.

Earlier in his career, he worked as a medical oncologist at the Kyiv City Clinical Oncological Center and contributed to regulatory evaluation of medicinal products at the State Expert Center of the Ministry of Health of Ukraine.

When to consult Dr. Chekhun:

  •  for diagnosis or clarification of a cancer diagnosis
  •  to obtain a second opinion on an existing treatment plan 
  •  when you need a personalized treatment strategy 
  •  for interpretation of test results, CT, MRI, PET-CT, and biopsies 
  •  when choosing between treatment options (chemotherapy, targeted therapy, immunotherapy) 
  •  in case of doubts about treatment strategy or disease progression 

Consultation format

Dr. Chekhun provides online consultations, where you can receive:

  •  expert second opinion 
  •  detailed case review 
  •  recommendations based on current international treatment guidelines 
  •  personalized treatment and follow-up plan 

Important:
Prescription and monitoring of medications must be carried out by your treating physician in an in-person (offline) setting. An online consultation does not replace a face-to-face visit but helps you make more informed decisions about your treatment.

Dr. Sviatoslav Chekhun combines clinical practice, research, and international experience, enabling him to provide patients with modern, evidence-based approaches in oncology.

5.0 (55)
Doctor

Anna Biriukova

General medicine 6 years exp.

Dr Anna Biriukova is an internal medicine doctor with clinical experience in cardiology, endocrinology, and gastroenterology. She provides online consultations for adults, offering expert medical support for heart health, hormonal balance, digestive issues, and general internal medicine.

Cardiology – Diagnosis and treatment of:

  • High blood pressure, blood pressure fluctuations, and cardiovascular risk prevention.
  • Chest pain, shortness of breath, arrhythmias (tachycardia, bradycardia, palpitations).
  • Leg swelling, chronic fatigue, reduced exercise tolerance.
  • EKG interpretation, lipid profile evaluation, cardiovascular risk assessment (heart attack, stroke).
  • Post-COVID-19 cardiac monitoring and care.
Endocrinology – Diabetes, thyroid, metabolism:
  • Diagnosis and management of type 1 and type 2 diabetes, and prediabetes.
  • Individual treatment plans including oral medications and insulin therapy.
  • GLP-1 therapy– modern pharmacological treatment for weight management and diabetes control, including drug selection, monitoring, and safety follow-up.
  • Thyroid disorders – hypothyroidism, hyperthyroidism, autoimmune thyroid diseases (Hashimoto’s, Graves’ disease).
  • Metabolic syndrome – obesity, lipid disorders, insulin resistance.
Gastroenterology – Digestive health:
  • Abdominal pain, nausea, heartburn, gastroesophageal reflux (GERD).
  • Stomach and intestinal conditions: gastritis, irritable bowel syndrome (IBS), indigestion.
  • Management of chronic digestive disorders and interpretation of tests (endoscopy, ultrasound, labs).
General internal medicine and preventive care:
  • Respiratory infections – cough, colds, bronchitis.
  • Lab test analysis, therapy adjustments, medication management.
  • Adult vaccinations – planning, contraindications assessment.
  • Cancer prevention – screening strategies and risk assessment.
  • Holistic approach – symptom relief, complication prevention, and quality of life improvement.
Dr Biriukova combines internal medicine with specialist insight, offering clear explanations, personalised treatment plans, and comprehensive care tailored to each patient.

Get QDENGA powder and solvent for injectable solution in pre-filled syringe Prescription Online

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Frequently Asked Questions

Is a prescription required for QDENGA powder and solvent for injectable solution in pre-filled syringe?

QDENGA powder and solvent for injectable solution in pre-filled syringe requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.

What is the active substance in QDENGA powder and solvent for injectable solution in pre-filled syringe?

The active ingredient in QDENGA powder and solvent for injectable solution in pre-filled syringe is dengue virus vaccines. This information helps identify medicines with the same composition but different brand names.

Who manufactures QDENGA powder and solvent for injectable solution in pre-filled syringe?

QDENGA powder and solvent for injectable solution in pre-filled syringe is manufactured by Takeda Gmbh. Pharmacy brands and packaging may differ depending on the distributor.

Which doctors can assess the use of QDENGA powder and solvent for injectable solution in pre-filled syringe online?

Doctors such as Family doctors, Psychiatrists, Dermatologists, Cardiologists, Endocrinologists, Gastroenterologists, Pulmonologists, Nephrologists, Rheumatologists, Hematologists, Infectious disease physicians, Allergists, Geriatricians, Paediatricians, Oncologists may assess whether QDENGA powder and solvent for injectable solution in pre-filled syringe is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.

How to buy QDENGA powder and solvent for injectable solution in pre-filled syringe in Spain?

Spain has a well-developed healthcare infrastructure across major cities such as Madrid, Barcelona, Valencia, and Seville. Pharmacies are widely available and operate under strict regulations, ensuring access to prescribed medications.

You can buy QDENGA powder and solvent for injectable solution in pre-filled syringe in Madrid, Barcelona, Seville, or Valencia at any local pharmacy with a valid prescription.

To obtain a prescription, you can use Oladoctor:

What are the alternatives to QDENGA powder and solvent for injectable solution in pre-filled syringe?

Other medicines with the same active substance (dengue virus vaccines) include ABRYSVO powder and solvent for injectable solution, AREXVY powder and suspension for injectable suspension, MRESVIA DISPERSION INJECTABLE IN PRE-FILLED SYRINGE. These may have different brand names or formulations but contain the same therapeutic ingredient. Always consult a doctor before switching or starting a new medicine.

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