Clorfenamina para alergias

Resumen

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

• Fiebre del heno.

• Food allergies.

• Drug allergies.

• Allergic skin reactions.

• Itching caused by infections such as virus de la varicela.

It is also given to treat a type of allergic reaction called anafilaxia, lo cual es una emergencia médica.

La clorfenamina está disponible con receta médica, o puedes comprarla sin receta en las farmacias.

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.

Common side effects of chlorphenamine include:

• Feeling dizzy or sleepy.

• Visión borrosa.

• Dolor de cabeza.

• Boca seca.

• Lack of concentration.

• Malestar estomacal.

• 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.

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.

Para asegurarse de que este es el tratamiento adecuado para usted, antes de que usted (o su hijo) comience a tomar clorfenamina, es importante que discuta el tratamiento con un médico o farmacéutico si:

• Estás embarazada o amamantando.

• Tienes un problema con el funcionamiento de tu hígado.

• Tienes glaucoma, una condición que causa un aumento de presión en tus ojos.

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

• Sabes que tienes una obstrucción en tus intestinos delgados.

• Tiene epilepsia.

• Está tomando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que esté disponible para comprar sin receta, así como medicamentos herbales y complementarios.

• You have ever had an allergic reaction to a medicine.
  

• 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.
  

• 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.

• Mantenga todos los medicamentos fuera del alcance y la vista de los niños.

• Almacenar en un lugar fresco y seco, lejos del calor y la luz directos.
  

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.