Prescription Acid Reducer Tablets for Stomach and Intestinal Health in Dogs and Cats Product Description Cimetidine 400 mg tablets are prescribed off-label for dogs and cats to bring excess stomach acid down and help gastrointestinal conditions heal. The higher strength makes it a better fit for larger dogs or cases where stronger acid control is needed under close vet supervision. Vets commonly turn to it for stomach ulcers, acid reflux, oesophageal inflammation, kidney disease gastritis, and mast cell tumour management. Benefits Gastric Ulcer Healing: Lowers acid output in the stomach to allow ulcers and erosions to heal with reduced ongoing irritation. Oesophageal Protection: Protects the oesophageal lining from acid-related damage in pets suffering from chronic vomiting or reflux. Mast Cell Tumour Support: Blocks histamine released by mast cell tumours to prevent dangerous overproduction of stomach acid in pets. Kidney Disease Gastric Support: Relieves secondary stomach erosion and acid discomfort that develops as a complication of chronic kidney disease. Toxin-Induced Gastritis Relief: Reduces acid levels in pets whose stomach lining has been damaged by NSAIDs or accidental toxin ingestion. Ingredients Active Ingredients Cimetidine 400 mg per tablet How to Use Cimetidine is a prescription-only medication when dispensed for veterinary use. A valid veterinarian prescription is required to purchase this product. Please follow your veterinarian's specific instructions for the dosage and administration of this medication for your pet. Disclaimer: Dosage and administration of this medication must be determined by a licensed veterinarian. Always consult your veterinarian before administering or adjusting any prescription medication for your pet. Tucking the tablet inside a pill pocket or soft treat wrap makes medication time easy and stress-free for both you and your pet. Shop Pill Pockets for Dogs | Shop Pill Pockets for Cats Additional Information Precautions Allergic Pets: Do not give this medication to pets with a known allergy to cimetidine or any other H2 blocker. Liver Disease: Liver problems can slow down how the body clears this drug, raising the chance of side effects in affected pets. Kidney Disease: Pets with kidney disease may feel the effects of this drug for longer, so regular vet check-ins are important. Cardiac Rhythm: Take extra care in pets with heart arrhythmias, as this drug can make an irregular heartbeat worse. Senior Pets: Older pets tend to react more strongly to this medication, so careful dosing and regular monitoring are a must. Switching Formulations: Tablets and liquids are dosed differently, so check with your vet before switching between the two. Drug Interactions: Cimetidine can push up blood levels of digoxin, diazepam, and metronidazole, so tell your vet about every medication your pet is on. Possible Side Effects Lethargy or Weakness: Some pets may feel more tired than usual, especially older ones or those already taking several other medications. Drooling in Cats: The bitter taste can make cats drool after taking this medication; tucking the tablet into food usually helps. Confusion or Disorientation: Older pets or those with organ problems may seem a bit confused or disoriented while on this medication. Digestive Upset: Some pets may feel off or have an unsettled stomach early in treatment; giving the dose with food tends to help. Cardiac Effects: An irregular heartbeat or trouble breathing are rare but serious; stop the medication and contact your vet right away. Storage Information Room Temperature Storage: Store below 86°F (30°C) away from direct sunlight and heat to preserve the medication's stability and potency. Protect from Moisture: Keep in a tightly sealed container away from humid areas such as bathrooms to prevent moisture degradation. Keep Out of Reach: Store securely out of reach of children and pets at all times to prevent accidental ingestion. NOTE: For generic medications, the product image shown may not reflect the actual item received. Generic medications can vary in size, color, and shape between orders depending on the manufacturer. Additionally, your medication may arrive packaged in a HardyPaw Pharmacy vial. Shipping & Return We offer ground, express, and priority delivery; see our shipping policy for details. For return instructions or product concerns, please refer to our detailed refund policy. Prescription items are NON-RETURNABLE and NON-REFUNDABLE. Frequently Asked Questions Q1: What is cimetidine 400 mg used for in dogs and cats? Ans: Cimetidine 400 mg is prescribed off-label to treat gastric and intestinal ulcers, acid reflux, oesophageal inflammation, kidney disease gastritis, and excess histamine from mast cell tumours. The higher strength suits larger dogs or more intensive acid control needs under close veterinary supervision. Q2: When should cimetidine 400 mg be given relative to meals? Ans: Cimetidine is most effective given around 30 minutes before feeding, allowing acid levels to drop before food triggers further secretion. If your pet experiences stomach upset when dosed without food, your vet may advise giving it alongside a small meal. Q3: Why does cimetidine interact with so many other medications? Ans: Cimetidine slows liver enzymes responsible for breaking down many other drugs, which raises their blood levels and increases the risk of toxicity. Always provide your vet with a full list of your pet's current medications and supplements before starting cimetidine to avoid dangerous interactions. Q4: Can cimetidine be used long-term in dogs and cats? Ans: Cimetidine is generally used short to medium term, as prolonged acid suppression can affect normal digestion and increase interaction risks over time. Your vet will monitor your pet's response closely and adjust the treatment plan as needed if extended use is required. Q5: What should I do if my pet has an adverse reaction to cimetidine? Ans: If your pet develops weakness, confusion, irregular breathing, or collapse after starting cimetidine, stop the medication immediately and seek urgent veterinary care. Bring a full list of your pet's current medications, as drug interactions may be contributing to the reaction. Clinical Research https://www.webmd.com/drugs/2/drug-11210/cimetidine-oral/details https://medlineplus.gov/druginfo/meds/a682256.html
