Ranitidine (Zantac) 300mg per Tablet

Ranitidine (Zantac) 300mg per Tablet
List Price: $0.29
Sale Price: $0.20
Code: 1296941123
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Ranitidine is an acid reducer that treats ulcers in the stomach and intestines. Ranitidine reduces stomach acid allowing for existing ulcers to heal, and may also prevent ulcers from forming. Ranitidine is not FDA approved for use in veterinary medicine; however, it is a commonly accepted practice for veterinarians to prescribe this medication for dogs and cats. In addition, Ranitidine is quite frequently used to treat ulcers in horses. Ranitidine requires a prescription from your veterinarian.


Dogs, Cats and Horses


  • Reduces stomach acid
  • Treats and prevents ulcers of the stomach and intestines
  • Easy to administer

How it works

Ranitidine blocks the histamine H-2 receptor that stimulates stomach acid secretion, which reduces the irritation of existing ulcers, and may prevent new ulcers from forming.


Store at room temperature away from moisture and heat.

  • Always consult with your veterinarian before giving medication.
  • Many veterinarian prescribe this medication to treat ulcers in horses. It is used this way quite frequently.
Pet Weight Dosage
Dog All weights Usual dosage: 0.25 to 1 mg/lb, every 8 to 12 hours.
Cats All weights Usual dosage: 0.25 to 1 mg/lb, every 8 to 12 hours.
Horses All weights Usual dosage: 5-10 mg /kg 2 to 4 times a day.


Keep out of the reach of children and pets. Do not administer to pets with known allergies to ranitidine. Use with caution in older pets as well as pets that are pregnant or nursing. Use with caution if your pet has pre-existing liver or kidney disease. Ranitidine may interact with some other medications. Therefore, inform your veterinarian of any and all medications your pet may be taking. This is especially important if your pet is currently taking antacids, ketoconazole, or procainamide. If you notice any behavioral or physiological changes in your pet while giving this medication, contact your veterinarian immediately.

Side Effects

For dogs and cats, if any of the following serious side effects occur, stop giving Ranitidine and seek emergency veterinary medical attention: an allergic reaction (difficulty breathing; swelling of the lips, tongue or face; hives). Side effects are rare but may include diarrhea or irregular heartbeat. Other side effects may also occur. Talk to your veterinarian about any side effect that seems unusual or bothersome to your pet.