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DYNEXAN 20 mg/g BUCAL GEL

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About the medicine

How to use DYNEXAN 20 mg/g BUCAL GEL

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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 Patient

Dynexan 20 mg/g Oral Gel

Lidocaine Hydrochloride

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

  • Follow the administration instructions for the medication contained in this package leaflet or as indicated by your doctor, dentist, or pharmacist.
  • Keep this package 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, dentist, or pharmacist, even if they are not listed in this package leaflet. See section 4.
  • You should consult a doctor or dentist if it worsens or does not improve after 2 days and the underlying cause is unknown.

Contents of the Package Leaflet:

  1. What is Dynexan and what is it used for
  2. What you need to know before using Dynexan
  3. How to use Dynexan
  4. Possible side effects
  5. Storage of Dynexan
  6. Contents of the pack and further information

1. What is Dynexan and what is it used for

Dynexan contains the active ingredient lidocaine hydrochloride, a substance for local numbing (local anesthesia) of the skin and mucous membranes.

Dynexan is used for the short-term symptomatic treatment of pain in the oral mucosa, gums, and lips in adults, adolescents, and children from 6 years of age.

You should consult a doctor or dentist if it worsens or does not improve after 2 days and the underlying cause is unknown.

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 using Dynexan

Do not use Dynexan:

  • if you are allergic to lidocaine hydrochloride or any of the other components of this medication (listed in section 6).
  • if you are allergic to local anesthetics of the amide type (e.g., prilocaine, mepivacaine).

Warnings and precautions

Consult your doctor, dentist, or pharmacist before starting to use Dynexan if you have severe underlying diseases, e.g., heart disease or severe liver or kidney disease.

Within 45 minutes after application, you should be cautious when consuming hot drinks or food to avoid asphyxiation, biting, or burns on the tongue.

Children

Do not administer this medication to children under 6 years of age.

Other medications and Dynexan

Tell your doctor, dentist, or pharmacist if you are using, have recently used, or might use any other medication.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you might be pregnant, or plan to become pregnant, consult your doctor, dentist, or pharmacist before using this medication. Dynexan should not be used during pregnancy unless strictly necessary.

Lidocaine is excreted in breast milk in small amounts.

At therapeutic doses of Dynexan, no effects on breastfed infants are expected.

Driving and using machines

Dynexan has no known effect on the ability to drive and use machinery.

Dynexan contains benzalkonium chloride

This medication contains 1 mg of benzalkonium chloride per gram of gel.Benzalkonium chloride may cause local irritation.

3. How to use Dynexan

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

Adults and adolescents

The recommended dose for adults and adolescents is 4-8 applications per day of a pea-sized amount of gel (approx. 0.2 g of gel (4 mg of lidocaine hydrochloride)).

Use in children

For children from 6 years of age, the dosage should be up to 4 times a day, a pea-sized amount of gel (approx. 0.2 g of gel (4 mg of lidocaine hydrochloride)).

How to administer

Oral route.

Apply Dynexan to the painful areas and gently massage.

If you wear dentures or dental appliances, apply a thin layer of Dynexan to the affected areas.

If symptoms persist for more than 2 days and the underlying cause is unknown, you should consult a doctor or dentist.

If you use more Dynexan than you should

So far, no cases of intoxication due to overdose, accidental ingestion, or errors with Dynexan have been reported. If you think you have used more Dynexan than you should, talk to your doctor or dentist immediately.

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

If you have any other questions about the use of this medication, ask your doctor, dentist, 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, this medication can cause side effects, although not everyone experiences them.

Very rarely, Dynexan may cause allergic reactions, in the most severe cases, an acute hypersensitivity reaction that can cause shock (anaphylactic shock). If you develop an allergic reaction, stop using Dynexan and seek medical attention immediately.

Other possible side effects

Very rare: may affect up to 1 in 10,000 people

  • Local skin alterations, e.g., burning sensation, swelling, redness, itching, urticaria, contact dermatitis, exanthema, pain
  • Alteration of taste
  • Numbness

Reporting side effects

If you experience any side effects, consult your doctor, dentist, or pharmacist, even if they are not listed in this package leaflet. You can also report them directly through the Spanish Medicines Monitoring System: https://www.notificaram.es. By reporting side effects, you can help provide more information on the safety of this medication.

5. Storage of Dynexan

Keep this medication out of the sight and reach of children.

Do not use this medication after the expiration date stated on the carton and tube after EXP. The expiration date is the last day of the month indicated.

No special storage conditions are required.

After opening the tube, the validity period is 3 months.

Medications should not be disposed of via wastewater or household waste. Deposit the packaging and any unused medication in the SIGRE collection point at the pharmacy. If in doubt, ask your pharmacist how to dispose of the packaging and any unused medication. This will help protect the environment.

6. Contents of the pack and further information

Composition of Dynexan

  • The active ingredient is lidocaine hydrochloride.
  • 1 g of gel contains 20 mg of lidocaine hydrochloride (as lidocaine hydrochloride 1 H2O).
  • The other components (excipients) are benzalkonium chloride, glycerol, guar gum, partially demetholized peppermint oil, liquid paraffin, peppermint oil, sodium saccharin, anhydrous colloidal silica, thymol, soft white petrolatum, purified water.

Appearance and packaging of the product

Dynexan is a white gel-like paste in the form of an oral gel.

Tubes containing 10 g of oral gel

Not all pack sizes may be marketed.

Marketing authorization holder and manufacturerChemische Fabrik Kreussler & Co. GmbH Rheingaustr. 87-93 65203 Wiesbaden Germany

This medication is authorized in the Member States of the European Economic Area under the following names:

Germany: LidocainKreussler 20 mg/g Gel zur Anwendung am Zahnfleisch/in der Mundhöhle

Spain: Dynexan 20 mg/g oral gel

Italy, Poland: Dynexan

Luxembourg: Dynexan Gel

Netherlands: Dynexan Gel 20 mg/g, gel voor oromucosaal gebruik

Date of the last revision of this package leaflet:

March 2025

Detailed and up-to-date information on this medication can be found on the website of the Spanish Agency for Medicines and Health Products (AEMPS) http://www.aemps.gob.es/

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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.

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Pedro Alvarez Guerrero

Psychiatry 8 years exp.

Dr. Alvarez Guerrero graduated in Medicine from the San Pablo CEU University in Madrid. He subsequently completed his specialization in Psychiatry in the Department of Psychiatry at Hospital Sant Joan de Deu in Manresa (Barcelona), where over the course of four years he acquired solid training in the bio-psycho-social model, developing his expertise across the different areas of mental health.

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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: 

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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:

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  • 12+ years of clinical experience in university hospitals in Germany and Spain.
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Joao Silva

General medicine 6 years exp.

Dr. João Silva is a physician with training and experience in the field of General and Family Medicine, dedicated to providing healthcare focused on the well-being and quality of life of his patients. Throughout his professional career, he has developed broad clinical competencies, striving to maintain a medical practice based on scientific evidence and continuous knowledge updates.

Between 2013 and 2019, he completed the Integrated Master's Degree in Medicine at the Abel Salazar Institute of Biomedical Sciences in Porto, where he acquired a solid academic and clinical education.

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Frequently Asked Questions

Is a prescription required for DYNEXAN 20 mg/g BUCAL GEL?
DYNEXAN 20 mg/g BUCAL GEL 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 DYNEXAN 20 mg/g BUCAL GEL?
The active ingredient in DYNEXAN 20 mg/g BUCAL GEL is lidocaine. This information helps identify medicines with the same composition but different brand names.
Who manufactures DYNEXAN 20 mg/g BUCAL GEL?
DYNEXAN 20 mg/g BUCAL GEL is manufactured by Chemische Fabrik Kreussler & Co Gmbh. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of DYNEXAN 20 mg/g BUCAL GEL 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 DYNEXAN 20 mg/g BUCAL GEL 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 DYNEXAN 20 mg/g BUCAL GEL?
Other medicines with the same active substance (lidocaine) include ACTILOGIC 700 MG MEDICATED ADHESIVE DRESSING, INSTILLIDO 20 mg/ml GEL, LAMBDALINA 40 mg/g CREAM. 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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