Cyproheptadine tablets
Periactin
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 27 Abr 2023
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Cyproheptadine is an antihistamine. It is taken for allergic conditions.
Asegúrate de seguir las instrucciones de dosificación en la etiqueta.
The most common side-effects are feeling tired or sleepy. This may affect your ability to drive.
En este artículo:
Videos seleccionados para Medicamentos para alergias
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About cyproheptadine
Tipo de medicamento | Un antihistamínico |
Usado para | Allergic conditions, such as hay fever and skin rashes |
También llamado | Periactin® |
Disponible como | Comprimidos |
Cyproheptadine belongs to a group of medicines known as sedating los antihistamínicos. It is used to relieve allergies, such as fiebre del heno and some allergic skin conditions. You can buy cyproheptadine tablets without a prescription at a pharmacy.
Exposure to substances such as pollen, pet fur, house dust or insect bites can cause some people to produce an excess of a chemical called histamine. This causes allergic symptoms which can include skin rashes, sneezing, watery eyes, and a runny or blocked nose. Because cyproheptadine blocks the effects of histamine, it helps relieve allergic symptoms like these.
Before taking cyproheptadine
Volver al contenidoTo make sure that this is the right treatment for you, before you start taking cyproheptadine 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.
Tienes problemas de próstata, o si has estado experimentando alguna dificultad para orinar.
You know you have a stomach ulcer or a blockage in your small intestines.
Tiene epilepsia.
You have a rare inherited blood condition known as porphyria.
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.
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How to take cyproheptadine
Volver al contenidoBefore you start this treatment, read the manufacturer's printed information leaflet from inside your pack. The manufacturer's leaflet will give you more information about cyproheptadine tablets and will provide a full list of the side-effects which you may experience from taking them.
Take cyproheptadine exactly as your doctor or pharmacist tells you to. The usual recommended doses are:
For adults: one tablet (4 mg) three times daily.
For children aged 7-14 years: one tablet (4 mg) two or three times daily.
For children aged 2-6 years: half a tablet (2 mg) two or three times daily.
You can take cyproheptadine before or after meals. Some people find it helps to swallow the tablets with a drink of water.
Si olvida tomar una dosis, no se preocupe, simplemente tome la siguiente dosis cuando corresponda y luego continúe como antes. No tome dos dosis juntas para compensar una dosis olvidada.
Most people only need to take an antihistamine for a short while when they have symptoms. You should stop taking cyproheptadine once your symptoms have eased.
Obteniendo el máximo de tu tratamiento
Volver al contenidoCyproheptadine 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 cyproheptadine.
If you are having an operation or any treatment or tests (particularly if it is to test for an allergy), tell the person due to carry out the treatment that you are taking an antihistamine. This is because you may be advised to stop taking cyproheptadine for a short while before some allergy tests.
Cyproheptadine 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 cyproheptadine works and can increase the risk of side-effects.
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Can cyproheptadine cause problems?
Volver al contenidoAlong with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains the most common one associated with cyproheptadine. You will find a full list 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.
C yproheptadine side-effects | ¿Qué puedo hacer si experimento esto? |
Feeling tired or sleepy, blurred vision | No conduzca ni utilice herramientas o máquinas hasta que se sienta mejor. No consuma alcohol |
Dolor de cabeza | Bebe mucha agua y pide a tu farmacéutico que te recomiende un analgésico adecuado. Si los dolores de cabeza continúan, informa a tu médico |
Difficulty passing urine | Hable con su médico si esto se vuelve problemático |
Boca seca | Intenta chupar caramelos sin azúcar o masticar chicle sin azúcar |
Si experimenta otros síntomas que cree que pueden deberse a este medicamento, hable con su médico o farmacéutico para obtener más consejos.
How to store cyproheptadine
Volver al contenidoMantenga 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.
Información importante sobre todos los medicamentos
Volver al contenidoInformación importante sobre todos los medicamentos
Never take more than the recommended dose. If you suspect that you or someone else might have taken an overdose of this medicine, go to the accident and emergency department of your local hospital. Take the container with you, even if it is empty.
Este medicamento es para ti. Nunca lo des a otras personas, incluso si su condición parece ser la misma que la tuya.
No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, que se encargará de desecharlos por ti.
Si tienes alguna pregunta sobre este medicamento, consulta a tu farmacéutico.
Informar efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede reportarlos en línea a través de sitio web de la Tarjeta Amarilla.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Lecturas adicionales y referencias
- Medicamentos Completos BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
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Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Next review due: 26 Apr 2026
27 Abr 2023 | Última versión

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