Clemastine tablets
Tavegil
Granskad av Dr Colin Tidy, MRCGPSenast uppdaterad av Michael Stewart, MRPharmSSenast uppdaterad 24 apr 2023
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Clemastine is an antihistamine. It is taken for allergic conditions.
Make sure you follow the dosage directions on the label.
The most common side effects are feeling tired or sleepy. These may affect your ability to drive.
Överblick
Clemastine is an antihistamine used to relieve allergy symptoms like hay fever and skin rashes.
It works by blocking histamine, reducing symptoms such as sneezing and watery eyes.
Clemastine can cause drowsiness, so avoid driving or operating machinery if affected.
Common side effects include feeling sleepy, dizziness, and dry mouth.
Do not drink alcohol with clemastine as it can increase drowsiness.
You can buy clemastine tablets without a prescription from a pharmacy.
Speak to a doctor or pharmacist before taking clemastine if you have certain health conditions or are pregnant.
Översikt
Typ av medicin | An antihistamine |
Används för | Allergic conditions, such as hay fever and skin rashes |
Även kallad | Tavegil® |
Tillgänglig som | Tabletter |
What is clemastine used for?
Clemastine is a type of antihistamine that is used to relieve allergies, such as hay fever och allergic skin conditions.
It is a sedating antihistamine, meaning it will make you feel sleepy or drowsy.
You can buy clemastine tablets without a prescription at a pharmacy.
How does clemastine work?
Clemastine works by blocking the effects of histamine, a chemical that is released when your body is exposed to allergens such as pollen, pet fur, house dust, or insect bites.
By blocking the effects of histamine, it helps relieve allergic symptoms such as skin rashes, sneezing, watery eyes, and a runny or blocked nose.
Side effects of clemastine
Common side effects of clemastine are:
Feeling tired or sleepy.
Yrsel.
Dry mouth, nose and throat.
You will find a full list in the manufacturer's information leaflet supplied with your medicine.
How to manage clemastine side effects
The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any continue or become troublesome.
Common clemastine side effects - these affect fewer than 1 in 10 people who take this medicine | Vad kan jag göra om jag upplever detta? |
Feeling tired or sleepy | If this happens, do not drive and do not use tools or machines. Do not drink alcohol. |
Om du upplever några andra symtom som du tror kan bero på denna medicin, tala med din läkare eller apotekare för vidare råd.
Who should not take clemastine?
Before you start taking clemastine it is important that you discuss the treatment with a doctor or pharmacist if:
You are pregnant, trying for a baby, or breastfeeding.
You have a problem with the way your liver works, or if you have a problem with your kidneys.
You have a condition which causes increased pressure in your eyes, such as glaucoma.
You have prostate problems, or if you have been experiencing any difficulty peeing (urinating).
You know you have a blockage in your small intestines.
You have a stomach ulcer.
You have epilepsy.
You have a rare inherited blood condition known as porphyria.
You are taking any other medicines. This includes any medicines you are taking which are available to buy without a prescription, as well as herbal and complementary medicines.
You have ever had an allergic reaction to a medicine.
How to take clemastine
Read the manufacturer's printed information leaflet from inside your pack for more information about clemastine tablets and side effects.
Take clemastine exactly as your doctor or pharmacist tells you to. The usual recommended doses are:
For adults: 1 (1 mg) tablet twice daily, taken morning and evening.
For children aged 6-12 years: ½-1 tablet twice daily, taken morning and evening.
For children aged 3-6 years: ½ tablet twice daily, taken morning and evening.
You can take clemastine before or after meals. Some people find it helps to swallow the tablets with a drink of water.
If you forget to take a dose, don't worry, just take the next dose when it is due and then continue as before. Do not take two doses together to make up for a forgotten dose.
Most people only need to take an antihistamine for a short while when they have symptoms. You should stop taking clemastine once your symptoms have eased.
Få ut det mesta av din behandling
Clemastine may cause drowsiness. If this happens to you, do not drive and do not use tools or machines. Alcohol will make the drowsiness worse, so it is best not to drink alcohol while you are on clemastine.
If you are having an operation or any treatment (particularly if it is to test for an allergy), tell the person carrying out the treatment that you are taking an antihistamine.
Clemastine may cause some people's skin to become more sensitive to sunlight than normal. Use a sunscreen that protects against UVA light and has a sun protection factor (SPF) of at least 15, especially in strong sunlight or until you know how your skin reacts. Do not use sunbeds.
If you buy any medicines, check with a pharmacist that they are safe to take with an antihistamine. This is because a number of other medicines can interfere with the way clemastine works and can increase the risk of side effects.
How to store clemastine
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Förvara på en sval, torr plats, borta från direkt värme och ljus.
Vanliga frågor
How long does clemastine take to work?
Clemastine usually starts working within 30 minutes to 1 hour. It can quickly relieve allergy symptoms such as itching, sneezing, hives, and watery eyes.
Because it is a drowsy antihistamine, some people may feel sleepy soon after taking it.
Can you take clemastine every day for allergies?
Clemastine can be taken daily for short-term allergy relief if recommended by a doctor or pharmacist. However, it may cause drowsiness, so it is not always ideal for long-term use.
Always follow the dosage instructions provided with the medicine.
What medicines should not be taken with clemastine?
Avoid combining clemastine with alcohol or medicines that cause drowsiness, such as sleeping tablets, strong painkillers, or some cold and flu remedies.
Ask a pharmacist before mixing clemastine with other medicines.
Is clemastine a drowsy antihistamine?
Yes. Clemastine is a sedating antihistamine that can cause sleepiness, tiredness, and slower reaction times.
Do not drive or operate machinery if you feel drowsy after taking it.
Viktig information om alla läkemedel
Viktig information om alla läkemedel
Ta aldrig mer än den föreskrivna dosen. Om du misstänker att du eller någon annan kan ha tagit en överdos av denna medicin, gå till akutmottagningen på ditt lokala sjukhus. Ta med behållaren, även om den är tom.
Denna medicin är för dig. Ge den aldrig till andra människor även om deras tillstånd verkar vara detsamma som ditt.
Behåll inte föråldrade eller oönskade mediciner. Ta dem till ditt lokala apotek som kommer att ta hand om dem åt dig.
Om du har några frågor om denna medicin, fråga din apotekare.
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Vanliga frågor
How long does clemastine take to work?
Clemastine usually starts working within 30 minutes to 1 hour. It can quickly relieve allergy symptoms such as itching, sneezing, hives, and watery eyes. Because it is a drowsy antihistamine, some people may feel sleepy soon after taking it.
Can you take clemastine every day for allergies?
Clemastine can be taken daily for short-term allergy relief if recommended by a doctor or pharmacist. However, it may cause drowsiness, so it is not always ideal for long-term use. Always follow the dosage instructions provided with the medicine.
What medicines should not be taken with clemastine?
Avoid combining clemastine with alcohol or medicines that cause drowsiness, such as sleeping tablets, strong painkillers, or some cold and flu remedies. Ask a pharmacist before mixing clemastine with other medicines.
Is clemastine a drowsy antihistamine?
Yes. Clemastine is a sedating antihistamine that can cause sleepiness, tiredness, and slower reaction times. Do not drive or operate machinery if you feel drowsy after taking it.
Vidare läsning och referenser
- Manufacturer's PIL, Tavegil® 1 mg Tablets; Thornton & Ross Ltd, The electronic Medicines Compendium. Dated March 2019.
Om författarenVisa fullständig biografi

Michael Stewart, MRPharmS
Ansvarig för granskning av medicinbroschyrer – Konsult, Apotekare
BPharm (Hons), MRPharmS
Michael är en apotekare som arbetar i Midlands och South Yorkshire med mer än 20 års erfarenhet av att ge råd om läkemedel och medicinska tillstånd. Han har en stark bakgrund inom vårdutbildning och har producerat och levererat utbildningskurser för apoteksteam och personal inom vårdboenden, inklusive sjuksköterskor. Han har också bidragit till apoteksrådgivande styrelser för hantering av mindre allvarliga tillstånd i samhället.
Om recensentenVisa fullständig biografi

Dr Colin Tidy, MRCGP
Allmänläkare, Medicinsk Författare
MBBS, MRCGP, MRCP (Paediatrics), DCH
Dr Colin Tidy är en NHS-läkare, baserad i Oxfordshire.
Artikelhistorik
Informationen på denna sida är skriven och granskad av kvalificerade kliniker.
Artikeln finns också på Engelska, Tyska, Spanska, Franska, Italienska, Portugisiska, Hindi, Hebreiska, Arabiska, och Svenska.
Next review due: 22 Oct 2027
24 apr 2023 | Senaste versionen

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