Cimetidine (Generic) Tablets, slide 1 of 1

Cimetidine (Generic) Tablets

Prescription Item

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In stock
Strength: 300-mg
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Count: 1 tablet

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Cimetidine is prescribed to limit the production of stomach acid by blocking the action of histamine. It helps to treat ulcers that have already formed and helps to prevent future ulcers from forming. Cimetidine is also used in the treatment of gastritis (inflammation of the stomach), esophagitis (inflammation of the esophagus) and gastric or esophageal reflux. Customers may receive this drug under the name Tagamet.

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Cimetidine is indicated for the treatment of specific ulcers, acid reflux diseases and heartburn. It may also be used to help prevent gastrointestinal bleeding.

Possible Side Effects

While no major side effects have been reported, each pet is different. If you notice any unusual reactions, contact your veterinarian immediately.

Drug & Food Interactions

Cimetidine Tablets should not be used in pets with known allergies to cimetidine.


Symptomatic response to treatment with cimetidine does not preclude the presence of a gastric malignancy. There have been rare reports of temporary healing of gastric ulcers despite subsequently documented malignancy.

This drug is FDA-approved for human use. However, it is common practice for veterinarians to prescribe such drugs for use in dogs, cats and horses.

NOTE: For Generic Medications, picture displayed may not depict actual product. Generic medications may vary from one order to the next by size, color and shape depending on manufacturer. Please note product may arrive in a Chewy Pharmacy vial.

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  1. Prescribing Information

See all items by Cimetidine

  • Item Number
  • Generic Name
  • Common Brand Name(s)
  • For Use With
    Dogs, Cats & Horses
  • Administration Form
  • Product Form
  • Health Condition
    Ulcers, Heartburn
  • Drug Type


Recommended Dosage

Give this medication by mouth according to your vet's instructions as they will be able to determine the appropriate dose and frequency.

Storage Instructions

Store at temperatures from 68° - 77°F.


What is Cimetidine?

An oral medicine used for the treatment of duodenal ulcers, active gastric ulcers, gastroesophageal reflux disease, pathological hypersecretory conditions, heartburn and the prevention of gastrointestinal bleeding.

What are the benefits of Cimetidine?

  • Treats ulcers and aids in the prevention of ulcer formation.
  • Reduction of stomach acid production .
  • Supports treatment of gastritis and esophagitis .

How is this medication given?

Cimetidine is given by mouth.

How does this medication work?

Cimetidine blocks the histamine H-2 receptor that stimulates stomach acid secretion. Thus, cimetidine blocks acid secretion in the stomach to provide a more favorable stomach pH (acidity).

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