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FORTASEC FLAS 2 mg ORAL LYOPHILIZED

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About the medicine

How to use FORTASEC FLAS 2 mg ORAL LYOPHILIZED

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

Fortasec Flas 2 mg oral lyophilized

Loperamide hydrochloride

Read the entire leaflet carefully before starting to take this medication, as it contains important information for you

Follow the administration instructions for the medication contained in this leaflet or as indicated by your doctor or pharmacist exactly.

  • Keep this leaflet as you may need to read it again.
  • If you need advice or more information, consult your pharmacist.
  • If you experience side effects, consult your doctor or pharmacist, even if they are not listed in this leaflet.
  • You should consult a doctor if it worsens or does not improve after 2 days.

Contents of the leaflet:

  1. What Fortasec Flas 2 mg oral lyophilizedis and what it is used for.
  2. What you need to know before taking Fortasec Flas 2 mg oral lyophilized.
  3. How to take Fortasec Flas 2 mg oral lyophilized.
  4. Possible side effects.
  5. Storage of Fortasec Flas 2 mg oral lyophilized.
  6. Package contents and additional information.

1. What is Fortasec Flas 2 mg oral lyophilized and what is it used for

It is an antidiarrheal medication that reduces intestinal movements and secretions, resulting in a decrease in liquid stools.

It is indicated for the symptomatic treatment of acute non-specific diarrhea (occasional) in adults and children over 12 years of age.

You should consult a doctor if it worsens or does not improve after 2 days.

Doctor consultation

Not sure if this medicine is right for you?

Discuss your symptoms and treatment with a doctor online.

2. What you need to know before taking Fortasec Flas 2 mg oral lyophilized

Do not take Fortasec Flas 2 mg oral lyophilized

  • Children under 12 years of age
    • If you are allergic (hypersensitive) to loperamide hydrochloride or any of the other components of this medication (listed in section 6)
    • If you have a high fever (above 38°C) or blood in your stool
    • If you suffer from ulcerative colitis (inflammation of the intestine)
    • If you have severe diarrhea after taking antibiotics.
    • If you have diarrhea due to an infection caused by organisms such as Salmonella, Shigella, and Campylobacter
    • Treatment should be suspended immediately and a doctor consulted if constipation, abdominal distension (swelling), or ileus (absence of intestinal movements) occurs.

Warnings and precautions

Consult your doctor or pharmacist before starting to take Fortasec Flas 2 mg.

If you have severe diarrhea, your body loses more fluids, sugars, and salts than usual, and you will need to replenish fluids by drinking more than usual. Ask your pharmacist about preparations to replenish sugars and salts.

  • The treatment with this medication is only symptomatic, so the diarrhea should be treated from its cause.
  • If you have AIDS and your stomach swells, stop taking this medication immediately and consult your doctor
  • If you have liver disease, consult your doctor before taking this medication, as it could produce toxicity in the central nervous system.
  • If you are taking any narcotic analgesic, consult your doctor or pharmacist before taking this medication, as it may interact with them.

If you do not observe improvement within 48 hours or if fever, constipation, or other symptoms appear, discontinue treatment and consult your doctor.

Patient with diarrhea should drink plenty of fluids to avoid dehydration, which is manifested by dry mouth, excessive thirst, decreased urine output, wrinkled skin, dizziness, and drowsiness. This is especially important in children and the elderly.

Do not take this medication for a use other than indicated (see section 1) and never take more than the recommended amount (see section 3). Serious heart problems (whose symptoms include rapid or irregular heartbeats) have been reported in patients who have taken an excessive amount of loperamide, the active ingredient of Fortasec Flas.

Children and adolescents

Do not use in children or adolescents under 12 years of age.

Use of Fortasec Flas with other medications

Tell your doctor or pharmacist that you are using or have recently used or may need to use any other medication.

  1. It is considered especially important if you are taking medications that contain
  2. Ritonavir, saquinavir (used to treat HIV).
  3. Quinidine (used to treat abnormal heart rhythms).
  4. Desmopressin oral (used to treat central diabetes insipidus and nocturnal urinary incontinence in children).
  5. Itraconazole or ketoconazole (used to treat fungal infections).
  6. Gemfibrozil (used to lower cholesterol).
  7. St. John's Wort (used to improve mood).
  8. Valerian (used to treat mild anxiety).
  9. Opioid analgesics (used to treat very intense pain) as it may increase the risk of severe constipation and central nervous system depression (e.g., drowsiness or decreased consciousness).
  10. Broad-spectrum antibiotics as Fortasec may worsen or prolong antibiotic-induced diarrhea and increase loperamide levels in the blood.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant, or plan to become pregnant, consult your doctor or pharmacist before taking this medication.

Pregnant women should not take Fortasec Flasunless prescribed by a doctor, as there is no experience with its use in pregnant women.

Do not take Fortasec Flasif you are breastfeeding. Small amounts of the medication may pass into breast milk.

Driving and using machines

You can drive and use machines unless you feel drowsy, dizzy, or somnolent. You cannot drive in those situations.

Warnings about excipients

Fortasec Flas contains aspartame (E-951)

This medication contains 0.750mg of aspartame in each lyophilized oral form.

Aspartame contains a source of phenylalanine that may be harmful in case of phenylketonuria (PKU), a rare genetic disease in which phenylalanine accumulates because the body is unable to eliminate it properly.

Fortasec Flas contains sodium:

This medication contains less than 23 mg of sodium (1mmol) per lyophilized oral form; that is, it is essentially "sodium-free".

Fortasec Flas contains propylene glycol (E-1520)

This medication contains 0.00003 mg of propylene glycol (E-1520) in each lyophilized oral form.

Fortasec Flas contains benzyl alcohol

This medication contains 0.00066 mg of benzyl alcohol in each lyophilized oral form. Benzyl alcohol may cause allergic reactions. Consult your doctor or pharmacist if you are pregnant or breastfeeding. This is because large amounts of benzyl alcohol can accumulate in your body and cause adverse effects (metabolic acidosis).

Consult your doctor or pharmacist if you have liver or kidney disease. This is because large amounts of benzyl alcohol can accumulate in the body and cause adverse effects (metabolic acidosis).

Fortasec Flas contains corn maltodextrin

This medication contains corn maltodextrin that contains glucose. If your doctor has told you that you have an intolerance to certain sugars, consult with them before taking this medication.

Fortasec Flas contains traces of sulfites

This medication may cause severe allergic reactions and bronchospasm because the peppermint flavor contains traces of sulfites.

3. How to take Fortasec Flas 2 mg oral lyophilized

Follow the administration instructions for the medication contained in this leaflet or as indicated by your doctor or pharmacist exactly. In case of doubt, ask your doctor or pharmacist.

The recommended dose is:

Adults

2 lyophilized oral forms (4 mg) as an initial dose followed by 1 lyophilized oral form (2 mg) after each diarrheal stool.

The maximum dose for adults is 8 lyophilized oral forms (16 mg) per day.

Childrenover 12 years

1 lyophilized oral form (2 mg) as an initial dose followed by 1 lyophilized oral form (2 mg) after each diarrheal stool.

In children, the maximum daily dose should be related to body weight:

Child's weight

Maximum number oflyophilized oral formsper day

From 27 kg

Maximum 4 lyophilized oral forms

From 34 kg

Maximum 5 lyophilized oral forms

From 40 kg

Maximum 6 lyophilized oral forms

From 47 kg

Maximum 7 lyophilized oral forms

Patient with liver disease:Should consult a doctor.

Advanced age and patients with kidney disease

Follow the same instructions as for adults and children over 12 years of age

Use in children and adolescents

Children under 12 years of age should not take this medication. It is contraindicated.

Four numbered steps showing a hand holding an inhaler with a mouthpiece and applying pressure to a valve

Written instructions on how to open an aluminum blister pack and administer an oral bio-pharmaceutical Fortasec Flash sublingually

If you take more Fortasec Flas 2 mg oral lyophilized than you should

Taking too many lyophilized oral forms can cause abnormal coordination, stupor, pupil constriction, increased muscle tension, difficulty breathing (children are more sensitive to these effects than adults), and reduced urine output.

In case of overdose or accidental ingestion, consult your doctor or pharmacist, or call the Toxicology Information Service, Phone 91 562 04 20 (indicating the medication and the amount ingested).

If you forget to take Fortasec

Do not take a double dose to make up for forgotten doses.

If you have any other doubts about the use of this medication, ask your doctor or pharmacist

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible side effects

Like all medications, Fortasec Flascan cause side effects, although not everyone will experience them.

Frequency not known (cannot be estimated from available data)

Upper abdominal pain, abdominal pain radiating to the back, abdominal tenderness, fever, rapid pulse, nausea, vomiting, which can be symptoms of pancreatitis (acute pancreatitis).

If you experience any of these symptoms, stop using the medication and seek immediate medical attention.

Very rare adverse reactions(may affect up to 1 in 10,000 patients):

  • Swelling of the face, lips, tongue, or throat that can cause difficulty swallowing or breathing (angioedema)
  • Allergic reactions (including anaphylactic shock)
  • Glossodynia
  • Fatigue
  • Decreased urine output
  • Loss or decreased consciousness
  • Abnormal coordination
  • Increased muscle tension (hypertonia)
  • Stupor
  • Pupil constriction (miosis)
  • Loss of intestinal mobility (ileus, including paralytic ileus)
  • Pruritus or urticaria
  • Somnolence
  • Abnormal colon dilation (megacolon)
  • Bullous eruption (including Stevens-Johnson syndrome, toxic epidermal necrolysis, and erythema multiforme)

Reporting side effects

If you experience any type of side effect, consult your doctor or pharmacist, even if it is a possible side effect not listed in this leaflet. You can also report them directly through the Spanish Medication Surveillance System for Human Use: https://www.notificaram.es. By reporting side effects, you can contribute to providing more information on the safety of this medication.

5. Storage of Fortasec Flas 2 mg oral lyophilized

This medication does not require any special storage temperature. Keep in the original packaging to protect it from moisture.

Keep out of sight and reach of children.

Do not use this medication after the expiration date shown on the packaging after "Expiration Date". The expiration date is the last day of the month indicated.

Medications should not be thrown away in drains or trash. Deposit the packaging and medications you no longer need in the Sigre Collection Point at the pharmacy. If in doubt, ask your pharmacist how to dispose of the packaging and medications you no longer need. This way, you will help protect the environment.

6. Package contents and additional information

Composition of Fortasec Flas 2 mg oral lyophilized

The active ingredient is loperamide 1.86 mg provided by 2 mg of loperamide hydrochloride.

The other components (excipients) are: gelatin, mannitol (E-421), aspartame (E-951), peppermint flavor (contains corn maltodextrin (contains glucose), propylene glycol (E-1520), benzyl alcohol, and traces of sulfites), and sodium hydrogen carbonate.

Appearance of the product and package contents

Fortasec Flas are lyophilized oral forms.

It is available in packages of 6 and 12 lyophilized oral forms.

Marketing authorization holder and manufacturer:

Marketing authorization holder

JNTL Consumer Health (Spain), S.L.

C/ Vía de los Poblados 1, Edificio E, planta 3

28033-Madrid

Spain

Manufacturer

JANSSEN-CILAG S.P.A.

Via C. Janssen

04010 Borgo S.Michele

Latina (Italy)

or

JNTL Consumer Health (France) S.A.S.

Domaine de Maigremont

Val de Reuil

  1. France

Date of the last revision of this leaflet: March 2022

Detailed and updated information about this medication is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) http://www.aemps.gob.es

Online doctors for FORTASEC FLAS 2 mg ORAL LYOPHILIZED

Discuss questions about FORTASEC FLAS 2 mg ORAL LYOPHILIZED, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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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.
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€58
5.0 (5)
Doctor

Tomasz Grzelewski

Dermatology 21 years exp.

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques. For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance. Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults. In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions. Patients commonly seek his care for: 

  • seasonal and perennial allergies
  • allergic rhinitis and chronic nasal symptoms
  • asthma and breathing difficulties
  • food and medication allergies
  • urticaria, atopic dermatitis and skin reactions
  • recurrent infections in children
  • sports-related health questions
  • general family medicine concerns

Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.

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€80
5.0 (1055)
Doctor

Andrei Popov

General medicine 7 years exp.

Dr. Andrei Popov is a family physician with specialized training in the management of chronic pain. He provides video consultations for adults in Spain and across Europe: whether you have been living with pain for months that no one has been able to properly explain, or you need to resolve a health issue without waiting weeks for an appointment.

His approach is clear: to listen, organize your case, and provide you with a practical roadmap based on evidence-based medicine and adapted to your medical history and personal needs.

Pain: how he can help

  • Chronic pain (more than 3 months
  • Migraine and recurrent or high-intensity headaches
  •  Neck, lower back, back and joint pain
  •  Post-traumatic pain after injuries or surgeries
  •  Pain of neurological origin: neuralgia, neuropathic pain, fibromyalgia

General medicine

  • Frequent respiratory infections (cold, flu, persistent cough)
  • Hypertension, diabetes and metabolic disorders
  • Review of laboratory tests and MRI/CT reports (explained in clear language)
  • Preventive medicine and health monitoring
  • Second opinions and treatment adjustments (when clinically appropriate)

What the consultation is like
 Each session lasts up to 30 minutes. We review symptoms, medical history, medications and any tests you provide, and you finish the consultation with a clear treatment plan, defined next steps, and criteria to understand when follow-up may be needed. If warning signs are detected, he will clearly advise whether you need in-person care or urgent medical attention.

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€80
5.0 (183)
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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€50

Frequently Asked Questions

Is a prescription required for FORTASEC FLAS 2 mg ORAL LYOPHILIZED?
FORTASEC FLAS 2 mg ORAL LYOPHILIZED does not require 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 FORTASEC FLAS 2 mg ORAL LYOPHILIZED?
The active ingredient in FORTASEC FLAS 2 mg ORAL LYOPHILIZED is loperamide. This information helps identify medicines with the same composition but different brand names.
Who manufactures FORTASEC FLAS 2 mg ORAL LYOPHILIZED?
FORTASEC FLAS 2 mg ORAL LYOPHILIZED is manufactured by Jntl Consumer Health (Spain) S.L.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of FORTASEC FLAS 2 mg ORAL LYOPHILIZED 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 FORTASEC FLAS 2 mg ORAL LYOPHILIZED is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.
What are the alternatives to FORTASEC FLAS 2 mg ORAL LYOPHILIZED?
Other medicines with the same active substance (loperamide) include ABECLIN 2 mg TABLETS, DIARFIN 2 mg HARD CAPSULES, DIARFIN FLAS 2 mg ORAL LYOPHILIZED. 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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