Ranitidine to reduce stomach acid
Zantac
Peer reviewed by Sid DajaniLast updated by Michael Stewart, MRPharmSLast updated 17 May 2024
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Clinical author's note Michael Stewart 18/5/2024: Further to earlier notes, all ranitidine products have now been discontinued in the UK. At the time of review there are no branded or generic products containing ranitidine available in the UK. Ranitidine may still be available in other countries. This medicine leaflet is based on medical information available in the UK at the time of writing and is left here for reference purposes. Please also refer to the manufacturer's information supplied with your medicine.
Clinical author's note Michael Stewart 22/02/23: As a precautionary measure all ranitidine-containing products have been discontinued globally whilst the scientific investigation into its risks and benefits is ongoing. It is not known whether ranitidine products will be made available again in the future. If you have any concerns regarding your use of ranitidine please speak to your doctor or a pharmacist.
Clinical author's note Michael Stewart 21/11/2019: Since October 2019 a large number of ranitidine products have been recalled by their manufacturers. Pharmacies and other retailers have been told to remove these products from sale. The recalls are due to a risk of contamination with a potentially harmful chemical. There may be an ongoing shortage of ranitidine products as a consequence. If you have any concerns about the medicine you are taking you should speak with your pharmacist for advice.
Ranitidine reduces the amount of acid produced by your stomach.
Any side-effects are usually mild and do not last long.
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About ranitidine
Tipo de medicamento | Antagonista del receptor H2 |
Utilizado para | Treatment of conditions caused by too much acid being produced in the stomach |
También llamado | Zantac® (discontinued) |
Disponible como | Comprimidos y medicamentos orales líquidos |
Ranitidine belongs to a group of medicines that reduce the amount of acid produced by the cells in the lining of the stomach. They are called 'histamine H2-receptor antagonists', but are commonly also called H2 blockers.
Ranitidine is helpful in the treatment of conditions caused by too much acid being produced in the stomach. These conditions include stomach ulcers (gastric ulcers), ulcers of the upper part of the intestine (duodenal ulcers), acid reflux or heartburn (reflux oesophagitis), and indigestion. Ranitidine is also prescribed to treat ulceration of the stomach which has been caused by non-steroidal anti-inflammatory drugs (NSAIDs).
Acid is produced naturally in your stomach to help you digest food. Excessive amounts of acid can irritate the lining of your stomach, causing inflammation, ulcers and other conditions. Ranitidine works by reducing the amount of acid produced by your stomach. This helps to relieve symptoms and assist the healing process where damage has already occurred.
Ranitidine is available on prescription. You can also buy short courses of ranitidine at retail outlets for symptoms such as heartburn, indigestion and hyperacidity in adults and in children over 16 years of age.
Before taking ranitidine
To make sure that this is the right treatment for you, before you start taking ranitidine it is important that you speak with a doctor or pharmacist:
Si está embarazada o en periodo de lactancia.
If you have any of the following symptoms: difficulty swallowing, loss of blood, or weight loss, or if you are being sick.
Si tiene algún problema con el funcionamiento de sus riñones.
Si padece un raro trastorno sanguíneo hereditario llamado porfiria.
Si alguna vez ha tenido una reacción alérgica a un medicamento.
Si está tomando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que pueda adquirirse sin receta, así como medicamentos a base de plantas y complementarios.
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How to take ranitidine
Before you start this treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about ranitidine and will provide you with a full list of the side-effects which you may experience from taking it.
Take ranitidine exactly as your doctor tells you to, or as directed on the label if you have bought it. There are three different strengths of tablet available - 75 mg, 150 mg and 300 mg. Only the lower strength of tablet can be purchased. Ranitidine is taken once or twice a day.
You can take ranitidine either before or after meals.
If you forget to take a dose at your usual time, you can take it when you remember. However, if it is nearly time to take your next dose when you remember, leave out the missed dose and take your next dose when it is due. Do not take two doses together to make up for a forgotten dose.
Aproveche al máximo su tratamiento
A course of treatment can vary in length depending upon the reason why you are taking ranitidine. It may be just for a few days to relieve your symptoms, or for several weeks to help an ulcer heal. Keep any appointments that you have booked with your doctor so that your progress can be checked.
Some people say that certain foods make their symptoms worse. Foods and drinks that have been suspected of this include peppermint, tomatoes, chocolate, spicy foods, hot drinks, coffee, and alcoholic drinks. If it seems that a food is aggravating your symptoms, try avoiding it for a while to see if your symptoms improve. Also, try avoiding eating large meals, as these can make your symptoms worse too.
If you are overweight, this puts extra pressure on your stomach and encourages the symptoms of acid reflux. Losing some weight and eating a healthy balanced diet may help you.
Fumar aumenta la cantidad de ácido producido por el estómago y puede empeorar sus síntomas. Si es fumador, hable con su médico o farmacéutico sobre cómo dejar de fumar.
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Can ranitidine cause problems?
Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the ones associated with ranitidine, although these are generally mild and do not last long. 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 of the following continue or become troublesome.
Ranitidine side-effects | ¿Qué puedo hacer si me ocurre esto? |
Constipation or diarrhoea, tummy pain | Estos deben pasar pronto |
Sensación de malestar (náuseas) | Comidas sencillas: evite los alimentos ricos o picantes. |
Feeling dizzy, headache | Estos deben pasar pronto |
If you experience any other symptoms which you think may be due to ranitidine, speak with your doctor or pharmacist for further advice.
How to store ranitidine
Mantenga todos los medicamentos fuera del alcance y de 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
Información importante sobre todos los medicamentos
No tome nunca más de la dosis prescrita. Si sospecha que usted u otra persona ha tomado una sobredosis de este medicamento, acuda al servicio de urgencias de su hospital. Llévese el envase, aunque esté vacío.
Este medicamento es para usted. Nunca se lo dé a otras personas aunque su enfermedad parezca ser la misma que la suya.
Si compra algún medicamento, compruebe siempre con un farmacéutico que es seguro tomarlo con sus otros medicamentos.
Si va a someterse a una operación o a un tratamiento dental, comunique a la persona que lleve a cabo el tratamiento qué medicamentos está tomando.
No guarde medicamentos caducados o que no desee. Llévelos a su farmacia local, que se encargará de eliminarlos por usted.
Si tiene cualquier duda sobre este medicamento pregunte a su farmacéutico.
Informar de los efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede notificarlos en línea a través del sitio web de la Tarjeta Amarilla.
Lecturas complementarias y referencias
- Manufacturer's PIL, Gavilast® Heartburn and Indigestion 75 mg Film-coated Tablets; Reckitt Benckiser Healthcare (UK) Ltd, The electronic Medicines Compendium. Dated October 2016.
- Medicamentos BNF completa 89ª edición; Asociación Médica Británica y Real Sociedad Farmacéutica de Gran Bretaña, Londres.
Historia del artículo
La información de esta página ha sido redactada y revisada por médicos cualificados.
Fecha prevista para la próxima revisión: 26 abr 2027
17 May 2024 | Latest version

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