Cimetidine Tablets

Cimetidine Tablets

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Product Description

Cimetidine is a supplement used for dogs and cats to treat and prevent certain inflammations in the stomach lining, such as ulcers, acid reflux, and gastritis. Cimetidine is also an over-the-counter histamine2 blocker utilized to diminish acid production within the gastrointestinal tract.

  • Usage -This medication is employed in pets to address a spectrum of gastric issues, including stomach or intestinal ulcers, inflammation, erosion due to kidney disease, stress-related stomach disorders, adverse drug reactions, acid reflux, and esophageal inflammation.

  • Off-label Use -In veterinary medicine, cimetidine is also prescribed for use in cats, dogs, small mammals, and horses to manage stomach acid disorders. However, its use in these animals should always be under the guidance of a veterinarian.

  • Administration -Cimetidine is typically administered orally in both tablet and liquid forms. Administering the medication approximately 30 minutes before a meal is generally recommended.

  • Missed Dose -In the event of a missed dose, it is advisable to administer the medication as soon as it is remembered. However, if the next scheduled dose is imminent, skipping the missed dose and resuming the regular dosing schedule is best.

  • Side Effects -While side effects from cimetidine are uncommon, they may include confusion and headache. In cats, drooling due to the taste of the medication is possible.

  • Duration of Effect -The effects of cimetidine are typically short-acting and should subside within 24 hours. However, in pets with pre-existing liver or kidney disease, the duration of its effects may be prolonged.

  • Risk Factors -Cimetidine should be avoided in allergic pets or those with liver or kidney dysfunction. Caution is advised when administering to geriatric, pregnant, or lactating pets.

  • Drug Interactions -Cimetidine may interact with a range of medications, so it is important to use it cautiously and disclose all other medications your pet is taking to the veterinarian. Additionally, it may interfere with certain laboratory tests.

  • Monitoring -While no specific monitoring is required, veterinarians may assess the effectiveness of cimetidine in managing the pet's condition during follow-up visits.

  • Storage -Tablets should be stored at room temperature and protected from light and moisture, as instructed. Liquid forms should also be stored according to the manufacturer's recommendations.

In the event of a suspected overdose or adverse reaction to cimetidine, immediate veterinary attention is required.

Side Effects & Warnings

Adverse effects appear to be very rare in animals at the dosages generally used. May alter the metabolic rates of certain dogs.

Cimetidine should be used with caution in geriatric animals, or those with blood abnormalities or liver or kidney disease. If your pet displays increased heart rate or has difficulty breathing after being administered Cimetidine, consult a veterinarian immediately.



Cimetidine is an anti-ulcer drug belonging to the category of the histamine receptor- 2, (H-2) blocker. Though Cimetidine is not approved for use in animals, it could be legally prescribed by veterinarians as an extra-label drug. Cimetidine is used in dogs and cats to treat mast cell tumors, gastritis (inflammation of the stomach), esophagitis (inflammation of the esophagus), and gastric or esophageal reflux.Chronic cimetidine therapy is found to be beneficial for uremic dogs under hemodialysis, to suppress the circulating concentrations of immuno reactive parathyroid hormone. Cimetidine has a shorter action span than many other H2 blockers. 

Serious side effects are generally not prevalent; however contact the veterinarian if the animal develops labored breathing or rapid heartbeat during the course of treatment with cimetidine. Cimetidine overdosage might result in tachycardia and respiratory failure, and should these symptoms persist, respiratory support and beta-adrenergic blockers should be used. 


Cimetidine is available in 100 mg, 150 mg, 200 mg and 300 mg tablets; liquid form of 300mg per 5ml and injectable form. The normal dose is 3 to 5 mg per pound, administered orally every six to eight hours. The dosage could be changed depending on the specific condition to be treated. Make sure to complete the course to prevent relapse. 

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