Clorfenamina para alergias

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What is chlorphenamine used for?

Chlorphenamine is a type of antihistamínico used to relieve allergies such as:

• Febre do feno.

• Food allergies.

• Drug allergies.

• Allergic skin reactions.

• Itching caused by infections such as catapora.

It is also given to treat a type of allergic reaction called anafilaxia, que é uma emergência médica.

Clorfenamina está disponível mediante receita, ou você pode comprá-la sem receita em farmácias.

How does chlorphenamine work?

Chlorphenamine works by blocking the effects of histamine - a chemical that is released when the body is exposed to substances such as pollen, pet fur, peanuts, shellfish or insect bites.

Histamine causes allergic symptoms such as swelling, skin rashes, sneezing, watery eyes, and a runny or blocked nose. Chlorphenamine relieves allergic symptoms like these.

Side effects of chlorphenamine

Common side effects of chlorphenamine include:

• Sentindo-se tonto ou sonolento.

• Visão embaçada.

• Dor de cabeça.

• Boca seca.

• Lack of concentration.

• Estômago irritado.

• Difficulty peeing (urinating).

Children and people over 65 years of age may be more prone to side effects from chlorphenamine.

You will find a full list of side effects in the manufacturer's information leaflet supplied with your medicine.

How to manage chlorphenamine 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.

If you experience any other symptoms which you think may be due to this medicine, speak with your doctor, dentist, or pharmacist for further advice.

Who should not take chlorphenamine?

Para garantir que este seja o tratamento adequado para você, antes de começar a tomar clorfenamina (ou seu filho), é importante que você consulte um médico ou farmacêutico se:

• Você está grávida ou amamentando.

• Você tem um problema com o funcionamento do seu fígado.

• Você tem glaucoma, uma condição que causa aumento da pressão nos seus olhos.

• You have prostate problems, or if you have been experiencing any difficulty peeing.

• Você sabe que tem uma obstrução no seu intestino delgado.

• Você tem epilepsia.

• Você está tomando outros medicamentos. Isso inclui quaisquer medicamentos que você esteja tomando que estejam disponíveis para compra sem receita médica, bem como medicamentos fitoterápicos e complementares.

• Você já teve uma reação alérgica a um medicamento.
  

Como tomar clorfenamina

• Read the leaflet included with your medicine before taking chlorphenamine.

• Take chlorphenamine exactly as advised by your doctor or pharmacist.

• The usual recommended doses are:

  • Adults and children over 12: 4 mg every 4-6 hours. Maximum: 24 mg daily (12 mg daily if over 65).

  • Children aged 6-11: 2 mg every 4-6 hours. Maximum: 12 mg daily.

  • Children aged 2-5: 1 mg every 4-6 hours. Maximum: 6 mg daily.

  • Children aged 1-23 months: 1 mg twice daily, ideally morning and evening.

• If using liquid medicine for children, measure doses carefully using the instructions on the bottle.

• You can take chlorphenamine before or after food.

• Stop taking chlorphenamine once your symptoms have eased.

• If you miss a dose, take the next one as normal. Do not take two doses together.
  

Obtendo o máximo do seu tratamento

• Chlorphenamine can cause drowsiness. If you feel sleepy, do not drive or use machinery.

• Avoid alcohol while taking chlorphenamine, as it can make drowsiness worse.

• Tell your doctor or healthcare professional you are taking chlorphenamine before any operation, treatment, or allergy test.

• Chlorphenamine may make your skin more sensitive to sunlight. Use sunscreen (SPF 15 or higher) and avoid sunbeds.

Check with a pharmacist before taking other medicines alongside chlorphenamine, as some can increase side effects or interact with antihistamines.

Como armazenar clorfenamina

• Mantenha todos os medicamentos fora do alcance e da vista das crianças.

• Armazene em local fresco e seco, longe de calor e luz diretos.
  

Perguntas frequentes

How long does chlorphenamine take to work?

Chlorphenamine usually starts working within 30 minutes to 1 hour. Because it is a drowsy antihistamine, some people may feel sleepy soon after taking it.

The effects of chlorphenamine can last for several hours, and drowsiness may continue into the next day in some people.

Can you take chlorphenamine every day?

Chlorphenamine can be taken daily for short-term allergy relief if needed. However, long-term use should only be advised by a doctor or pharmacist.

Always follow the recommended dose and stop taking it once symptoms improve.

Can you drink alcohol while taking chlorphenamine?

It is best to avoid alcohol while taking chlorphenamine. Alcohol can increase drowsiness and make side effects worse.

Can chlorphenamine be taken with other antihistamines?

You should not take chlorphenamine with other antihistamines unless advised by a healthcare professional. Combining antihistamines can increase side effects such as drowsiness.

Can you take chlorphenamine during pregnancy?

Chlorphenamine usually can be taken during pregnancy. However, always let your doctor or midwife know that you are pregnant before taking it.

Informações importantes sobre todos os medicamentos