Pepsin (generic name: famotidine) can be prescribed to treat conditions caused by excess stomach acid. It belongs to the pharmacological class of histamine Hâ‚‚-receptor antagonists, which act by reducing the amount of acid the stomach produces.
Famotidine is used in the treatment and prevention of disorders such as stomach and duodenal ulcers, acid reflux and gastro-oesophageal reflux disease (GERD), where stomach acid backs up into the oesophagus, and conditions where the stomach’s acid output is abnormally high.
By lowering acid levels, famotidine helps reduce irritation of the stomach and oesophageal lining and helps heal ulcerated or inflamed areas. The effect may also reduce the amount of the digestive enzyme pepsin that is secreted in response to acid, which can assist in reducing damage to the digestive tract. The oral delivery of famotidine allows regular dosing to maintain control of acid levels, offering a maintenance-therapy option rather than one focused on immediate relief of sudden intense acid events. When used as directed, it helps manage acid-related symptoms and supports longer-term digestive health.
Dosage
It is important to follow the dosage instructions printed on the label of the box. Check with a doctor or pharmacist if there are any doubts regarding the proper dosage and treatment regimen.
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Famotidine is commonly taken by mouth, in tablet form.
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For adults and children over a certain weight, dosing may be 20 mg twice daily or 40 mg once daily at night, depending on the condition being treated (such as ulcers or reflux).
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For prevention of symptoms (e.g., before foods or drinks known to cause heartburn), famotidine may be taken 15-60 minutes before the triggering meal.
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The medicine should be swallowed with water.
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If a dose is missed, take it as soon as remembered unless it’s almost time for the next scheduled dose — do not double up to make up for a missed dose.
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The doctor may adjust the dose downward once symptoms are well controlled.
Storage
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Store at room temperature, typically around 20–25 °C (68–77 °F).
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Keep away from excessive heat, moisture and direct sunlight.
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Keep the container tightly closed when not in use.
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Keep out of reach of children.
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The expiry date applies to the last day of the printed month.
This text is for informational purposes only. Please consult a doctor or pharmacist before using any medication.
The patient information leaflet that comes with the medication includes full information about the correct usage, storage and possible side effects. Be sure to read and understand these, and if there are any questions, discuss them with a healthcare provider or pharmacist before starting treatment.
Most people who use famotidine do not experience any adverse side effects. Doctors prescribe this medication because they assess the benefits of such treatment outweigh any likely unwanted effects.
Common side effects:
Serious side effects requiring immediate action:
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irregular heartbeat or chest pain
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persistent symptoms of gastro-intestinal bleeding (such as black stool or vomiting blood)
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confusion, agitation or seizures (especially in people with kidney problems or the very elderly)
Caution:
If a sudden allergic reaction (anaphylaxis) occurs shortly after taking Pepsin, with symptoms like swelling of the face, tongue, or throat making it difficult to breathe or swallow, or there is wheezing, hives, rash, blistering, or peeling of the skin, call a doctor or 911 right away, or go to an emergency room immediately.
Not all side effects are listed here. If these or other unlisted symptoms persist or worsen, consult a healthcare provider or pharmacist.
Pepsin (famotidine) is used to treat and manage several acid-related conditions:
Gastric and duodenal ulcers
Typical symptoms include:
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burning or gnawing pain in the stomach area (often when the stomach is empty)
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nausea or a feeling of fullness
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vomiting or loss of appetite
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dark or tar-coloured stools (sign of bleeding)
In these ulcers, the stomach lining is damaged by excess acid and digestive enzymes — by reducing acid and pepsin, famotidine supports healing.
Gastro-oesophageal reflux disease (GERD) / erosive oesophagitis
Typical symptoms include:
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heartburn (burning feeling behind the breastbone)
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regurgitation of acid into the throat or mouth
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difficulty swallowing or pain when swallowing
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chronic cough, hoarseness or sore throat linked to reflux
Here, famotidine helps by reducing acid that irritates the oesophagus lining and may reduce the volume of acid-related damaging secretions.
Conditions of acid overproduction (e.g., Zollinger-Ellison syndrome)
In these rare states the stomach produces excessive acid and enzymes, leading to recurrent ulcers and reflux. Famotidine is used to reduce acid secretion and enzyme output until other therapy is in place.
In all cases, famotidine is part of a broader strategy that may include lifestyle changes (diet, weight control, avoiding triggers, smoking cessation) and other medications when needed.