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LYFNUA 45 mg FILM-COATED TABLETS

LYFNUA 45 mg FILM-COATED TABLETS

Ask a doctor about a prescription for LYFNUA 45 mg FILM-COATED TABLETS

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Doctor

Svetlana Kolomeeva

Cardiology17 years of experience

Dr. Svetlana Kolomeeva is a general practitioner and internal medicine doctor providing online consultations for adults. She helps patients manage acute symptoms, chronic conditions, and preventive care. Her clinical focus includes cardiovascular health, hypertension control, and managing symptoms like fatigue, weakness, sleep issues, and overall low energy.

Patients commonly seek her help for:

  • High blood pressure, headaches, dizziness, swelling, palpitations.
  • Diagnosis and management of hypertension, arrhythmias, and tachycardia.
  • Metabolic syndrome, excess weight, high cholesterol.
  • Chronic fatigue, insomnia, poor concentration, anxiety.
  • Respiratory symptoms: colds, flu, sore throat, cough, fever.
  • Digestive issues: heartburn, bloating, constipation, IBS symptoms.
  • Chronic conditions: diabetes, thyroid disorders.
  • Interpretation of lab tests and medical reports, therapy adjustment.
  • Second opinion and decision-making support.
  • Cardiovascular disease prevention and metabolic risk reduction.
  • Long-term follow-up and dynamic health monitoring.

Dr Kolomeeva combines clinical expertise with personalised care. She clearly explains diagnoses, guides patients through symptoms and treatment options, and provides actionable plans. Her consultations are designed not only to address current complaints but also to stabilise chronic conditions and prevent future complications. She supports patients through every stage of care – from first symptoms to ongoing health management.

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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 LYFNUA 45 mg FILM-COATED TABLETS

Introduction

Package Leaflet: Information for the Patient

Lyfnua 45mg film-coated tablets

gefapixant

This medicinal product is subject to additional monitoring, which will allow for quick identification of new safety information. You can help by reporting any side effects you may get. See the end of section 4 for how to report side effects.

Read all of this leaflet carefully before you start taking this medicine, 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 or pharmacist.
  • This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as yours.
  • If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. See section 4.

Contents of the pack

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

1. What is Lyfnua and what is it used for

Lyfnua contains the active substance gefapixant.

Lyfnua is a medicine used in adults for chronic cough (cough that lasts for more than 8 weeks) and:

  • the cough does not go away even after using other medicines or
  • the reason for the cough is unknown.

The active substance of Lyfnua, gefapixant, blocks the action of the nerves that cause abnormal coughing.

2. What you need to know before you take Lyfnua

Do not take Lyfnua

  • if you are allergicto gefapixant or any of the other ingredients of this medicine (listed in section 6).

Warnings and precautions

Tell your doctor or pharmacist before you start taking and while you are taking Lyfnua if:

  • you are allergicto medicines that contain sulfonamide
  • you have sleep apnea- where your breathing stops and starts again while you sleep
  • you develop an acute infection of the lung/lower respiratory system (e.g. pneumonia or bronchitis)
  • you notice a change in the taste of things, loss of tasteor less ability to taste, which continues even after stopping Lyfnua.

Children and adolescents

Do not give this medicine to children and adolescents under 18 years of age. This is because it has not been studied in this age group.

Other medicines and Lyfnua

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

Pregnancy and breastfeeding

It is not known if Lyfnua can harm the fetus. Therefore, it is best to avoid using Lyfnua if you are pregnant.

If you are pregnant, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

Animal studies have shown that Lyfnua can pass into breast milk. A risk to the baby cannot be excluded. You and your doctor must decide whether to take Lyfnua or to breastfeed.

Driving and using machines

You may feel dizzy after taking Lyfnua. If this happens, do not drive or use tools or machines until you feel better.

Lyfnua contains sodium

This medicine contains less than 1 mmol of sodium (23 mg) per tablet; this is essentially “sodium-free”.

3. How to take Lyfnua

Always take this medicine exactly as your doctor or pharmacist has told you. If you are not sure, check with your doctor or pharmacist.

How much to take

The recommended dose of Lyfnua is:

  • one 45 mg tablet twice a day.

Adults with kidney problems

Your doctor may change the amount and frequency you take Lyfnua if:

  • you have severe kidney failure and are not on dialysis.

How to take it

Swallow the tablet whole. Do not break, crush or chew the tablet.

You can take the tablet with or without food.

If you take more Lyfnua than you should

If you take too much Lyfnua, contact a doctor or pharmacist immediately.

If you forget to take Lyfnua

If you miss a dose, skip that dose and take the next dose at the scheduled time.

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

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

4. Possible side effects

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

Possible side effects are:

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

  • change in the taste of things (such as metallic, bitter or salty taste)
  • having less taste
  • loss of taste

Common(may affect up to 1 in 10 people)

  • feeling sick (nausea)
  • taste different from what it used to be
  • cough (worsening, increase)
  • dry mouth
  • upper respiratory tract infection (an infection in the upper part of the respiratory tract, which includes the nose and throat)
  • diarrhea
  • pain in the mouth or throat
  • having less appetite than usual
  • feeling dizzy
  • pain in the upper abdomen (stomach)
  • indigestion
  • unusual sensations in the mouth (e.g. tingling or itching sensation)
  • loss of sensation in the mouth
  • increased saliva production
  • insomnia (difficulty sleeping)
  • headache

Uncommon(may affect up to 1 in 100 people)

  • kidney stones, in the urine or in the kidney

Reporting of side effects

If you experience any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via 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 Lyfnua

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

Do not use this medicine after the expiry date which is stated on the blister and carton after “EXP”. The expiry date refers to the last day of the month shown.

This medicine does not require any special storage conditions.

Do not use this medicine if you notice that the packaging is damaged or shows signs of tampering.

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 other information

What Lyfnua contains

The active substance is gefapixant. Each film-coated tablet contains 45 mg of gefapixant (as citrate).

The other ingredients are silica (colloidal anhydrous) (E 551), crospovidone (E 1202), hypromellose (E 464), magnesium stearate (E 470b), mannitol (E 421), microcrystalline cellulose (E 460), sodium fumarate and stearic acid. The film coating contains the following ingredients: hypromellose (E 464), titanium dioxide (E 171), triacetin (E 1518) and red iron oxide (E 172). The tablets are polished with carnauba wax (E 903).

Appearance and packaging

Lyfnua is a pink, round and convex tablet, engraved with “777” on one side and smooth on the other.

Lyfnua is available in white, opaque PVC/PE/PVdC blisters with a push-through lid, in pack sizes of 28, 56 and 98 film-coated tablets, and in multipacks containing 196 (2 packs of 98) film-coated tablets.

Not all pack sizes may be marketed.

Marketing authorisation holder and manufacturer

Merck Sharp & Dohme B.V.

Waarderweg 39

2031 BN Haarlem

Netherlands

For further information on this medicine, contact the local representative of the marketing authorisation holder:

Belgium

MSD Belgium

Tel: +32(0)27766211

[email protected]

Lithuania

UAB Merck Sharp & Dohme

Tel: +370 5 2780 247

[email protected]

Text in Bulgarian language showing company name Merck Sharp & Dohme Bulgaria, phone number and email address

Luxembourg

MSD Belgium

Tel: +32(0)27766211

[email protected]

Czech Republic

Merck Sharp & Dohme s.r.o.

Tel: +420 233 010 111

[email protected]

Hungary

MSD Pharma Hungary Kft.

Tel: +36 1 888 5300

[email protected]

Denmark

MSD Danmark ApS

Tel: +45 4482 4000

[email protected]

Malta

Merck Sharp & Dohme Cyprus Limited

Tel: 8007 4433 (+356 99917558)

[email protected]

Germany

MSD Sharp & Dohme GmbH

Tel: +49 (0) 89 20 300 4500

[email protected]

Netherlands

Merck Sharp & Dohme B.V.

Tel: 0800 9999000

(+31 23 5153153)

[email protected]

Estonia

Merck Sharp & Dohme OÜ

Tel: +372 614 4200

[email protected]

Norway

MSD (Norge) AS

Tel: +47 32 20 73 00

[email protected]

Greece

MSD Α.Φ.Ε.Ε.

Tel: +30 210 98 97 300

[email protected]

Austria

Merck Sharp & Dohme Ges.m.b.H.

Tel: +43 (0) 1 26 044

[email protected]

Spain

Merck Sharp & Dohme de España, S.A.

Tel: +34 91 321 06 00

[email protected]

Poland

MSD Polska Sp. z o.o.

Tel: +48 22 549 51 00

[email protected]

France

MSD France

Tel: +33 (0) 1 80 46 40 40

Portugal

Merck Sharp & Dohme, Lda

Tel: +351 21 4465700

[email protected]

Croatia

Merck Sharp & Dohme d.o.o.

Tel: +385 1 6611 333

[email protected]

Romania

Merck Sharp & Dohme Romania S.R.L.

Tel: +40 21 529 29 00

[email protected]

Ireland

Merck Sharp & Dohme Ireland (Human Health) Limited

Tel: +353 (0)1 2998700

[email protected]

Slovenia

Merck Sharp & Dohme, inovativna zdravila d.o.o.

Tel: +386 1 520 4201

[email protected]

Iceland

Vistor ehf.

Tel: +354 535 7000

Slovakia

Merck Sharp & Dohme, s. r. o.

Tel: +421 2 58282010

[email protected]

Italy

MSD Italia S.r.l.

Tel: 800 23 99 89 (+39 06 361911)

[email protected]

Finland

MSD Finland Oy

Tel: +358 (0)9 804 650

[email protected]

Cyprus

Merck Sharp & Dohme Cyprus Limited

Tel: 800 00 673 (+357 22866700)

[email protected]

Sweden

Merck Sharp & Dohme (Sweden) AB

Tel: +46 77 5700488

[email protected]

Latvia

SIA Merck Sharp & Dohme Latvija

Tel: +371 67025300

[email protected]

Date of last revision of this leaflet:

Detailed information on this medicine is available on the European Medicines Agency website: https://www.ema.europa.eu

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Online doctors for LYFNUA 45 mg FILM-COATED TABLETS

Discuss dosage, side effects, interactions, contraindications, and prescription renewal for LYFNUA 45 mg FILM-COATED TABLETS – subject to medical assessment and local rules.

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Liudmyla Boichuk

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She treats adults with respiratory illnesses such as pneumonia, COPD and bronchial asthma, as well as cardiovascular conditions including hypertension and ischaemic heart disease. Her practice also covers gastrointestinal complaints and chronic comorbidities that require careful, structured medical supervision.

Dr Boichuk provides care for children from birth, including acute respiratory viral infections, infectious diseases, pneumonia, bronchitis, bronchial obstruction syndromes and allergic reactions. She offers clear, evidence-based guidance to parents and ensures safe follow-up throughout the child’s recovery.

Her work also includes developing personalised immunisation plans and supporting families with long-term preventive care.

Known for her structured clinical approach and clear communication, Dr Liudmyla Boichuk offers patients of all ages comprehensive, reliable and evidence-based medical care.

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Doctor

Svetlana Kolomeeva

Cardiology17 years of experience

Dr. Svetlana Kolomeeva is a general practitioner and internal medicine doctor providing online consultations for adults. She helps patients manage acute symptoms, chronic conditions, and preventive care. Her clinical focus includes cardiovascular health, hypertension control, and managing symptoms like fatigue, weakness, sleep issues, and overall low energy.

Patients commonly seek her help for:

  • High blood pressure, headaches, dizziness, swelling, palpitations.
  • Diagnosis and management of hypertension, arrhythmias, and tachycardia.
  • Metabolic syndrome, excess weight, high cholesterol.
  • Chronic fatigue, insomnia, poor concentration, anxiety.
  • Respiratory symptoms: colds, flu, sore throat, cough, fever.
  • Digestive issues: heartburn, bloating, constipation, IBS symptoms.
  • Chronic conditions: diabetes, thyroid disorders.
  • Interpretation of lab tests and medical reports, therapy adjustment.
  • Second opinion and decision-making support.
  • Cardiovascular disease prevention and metabolic risk reduction.
  • Long-term follow-up and dynamic health monitoring.

Dr Kolomeeva combines clinical expertise with personalised care. She clearly explains diagnoses, guides patients through symptoms and treatment options, and provides actionable plans. Her consultations are designed not only to address current complaints but also to stabilise chronic conditions and prevent future complications. She supports patients through every stage of care – from first symptoms to ongoing health management.

CameraBook a video appointment
€50
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Dr. Tsurkan supports patients with a wide range of health issues, including:

  • Respiratory infections: cold, flu, bronchitis, pneumonia, and lingering coughs.
  • ENT conditions: sinusitis, tonsillitis, otitis (ear infections), sore throat, allergic rhinitis.
  • Eye conditions: allergic or infectious conjunctivitis, red eyes, irritation.
  • Digestive issues: acid reflux (GERD), gastritis, irritable bowel syndrome (IBS), constipation, bloating, nausea.
  • Urinary and reproductive health: urinary tract infections (UTIs), cystitis, prevention of recurrent infections.
  • Chronic diseases: hypertension, elevated cholesterol, weight management.
  • Neurological complaints: headaches, migraines, sleep disturbances, fatigue, general weakness.
  • Children’s health: fever, infections, digestive issues, follow-ups, vaccination guidance.

She also provides:

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  • Interpretation of test results and medical reports.
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  • Support in managing multiple coexisting conditions.
  • Remote prescription management and medical documentation.

Dr. Tsurkan’s approach is evidence-based and holistic. She works closely with each patient to develop an individualised care plan that addresses both symptoms and root causes. Her goal is to empower patients to take control of their health and maintain well-being through lifestyle adjustments, routine check-ups, and early intervention.

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  • Diagnostic consultations for suspected endocrine disorders
  • Management of thyroid conditions, including in pregnant women
  • Early detection and treatment of type 1 and type 2 diabetes, with personalised therapy plans
  • Obesity treatment: identifying underlying causes of weight gain, combining medication and non-pharmacological strategies, and long-term support
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  • Ongoing care for patients with osteoporosis, pituitary, and adrenal gland disorders
Dr. Tabeshadze takes a patient-centred approach based on evidence-based medicine. Her goal is to help patients achieve hormonal balance, manage chronic conditions effectively, and improve overall well-being through targeted, personalised care.
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  • interpretation of test results
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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.

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Areas of medical care include:

  • Respiratory conditions: colds, flu, acute and chronic bronchitis, mild to moderate pneumonia, bronchial asthma.
  • ENT and eye conditions: sinusitis, tonsillitis, pharyngitis, otitis, infectious and allergic conjunctivitis.
  • Digestive issues: gastritis, acid reflux (GERD), IBS, dyspepsia, bloating, constipation, diarrhoea, functional bowel symptoms, intestinal infections.
  • Urological and infectious diseases: acute and recurrent cystitis, bladder and kidney infections, prevention of recurrent UTIs, asymptomatic bacteriuria.
  • Chronic conditions: hypertension, diabetes, hypercholesterolemia, metabolic syndrome, thyroid disorders, excess weight.
  • Neurological and general symptoms: headache, migraine, dizziness, fatigue, sleep disturbances, reduced concentration, anxiety, asthenia.
  • Chronic pain support: back, neck, joint, and muscle pain, tension syndromes, pain associated with osteochondrosis and chronic conditions.

Additional care areas:

  • Preventive consultations and check-up planning.
  • Medical advice and follow-up consultations.
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  • Structured support for undiagnosed complaints.
  • Second opinion on diagnoses and treatment plans.
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  • Preconception counselling and postpartum support.
  • Immunity support and strategies to reduce frequency of infections.

Dr. Travkina combines evidence-based medicine with an attentive, personalised approach. Her consultations focus not only on treatment, but also on prevention, recovery, and long-term wellbeing.

If during the consultation it becomes clear that your case requires in-person assessment or specialised care outside of her scope, the session will be terminated and the payment fully refunded.

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