Pepcid (Famotidine) Dosage for Cats
This dosage information is for educational purposes only. Always consult your veterinarian before giving any medication to your pet. Dosages may vary based on your pet's health conditions, other medications, and individual factors.
Dosage Calculator
Enter your cat's weight to calculate the recommended dose.
Recommended Dosage
Low Dose
—
mg
Standard Dose
—
mg
Max Dose
—
mg
Frequency
every 12-24 hours
These calculations are estimates based on standard veterinary dosing guidelines. Always confirm with your veterinarian before administering medication.
Pepcid Dosage Chart for Cats by Weight
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| Weight | Low Dose | Standard Dose | Max Dose | Frequency |
|---|---|---|---|---|
| 3 lbs (1.4 kg) | 0.5mg | 0.5mg | 1.5mg | every 12-24 hours |
| 4 lbs (1.8 kg) | 0.5mg | 1mg | 2mg | every 12-24 hours |
| 5 lbs (2.3 kg) | 0.5mg | 1mg | 2.5mg | every 12-24 hours |
| 6 lbs (2.7 kg) | 0.5mg | 1.5mg | 2.5mg | every 12-24 hours |
| 7 lbs (3.2 kg) | 1mg | 1.5mg | 3mg | every 12-24 hours |
| 8 lbs (3.6 kg) | 1mg | 2mg | 3.5mg | every 12-24 hours |
| 9 lbs (4.1 kg) | 1mg | 2mg | 4mg | every 12-24 hours |
| 10 lbs (4.5 kg) | 1mg | 2.5mg | 4.5mg | every 12-24 hours |
| 12 lbs (5.4 kg) | 1.5mg | 2.5mg | 5.5mg | every 12-24 hours |
| 14 lbs (6.3 kg) | 1.5mg | 3mg | 6.5mg | every 12-24 hours |
| 16 lbs (7.3 kg) | 2mg | 3.5mg | 7.5mg (10mg tablet) | every 12-24 hours |
| 18 lbs (8.2 kg) | 2mg | 4mg | 8mg (10mg tablet) | every 12-24 hours |
| 20 lbs (9.1 kg) | 2.5mg | 4.5mg | 9mg (10mg tablet) | every 12-24 hours |
| 25 lbs (11.3 kg) | 3mg | 5.5mg | 11.5mg (10mg tablet) | every 12-24 hours |
What is Pepcid (Famotidine) used for in cats?
How to give Pepcid to your cat
Famotidine tablets are small but may need to be cut for cat-sized doses. A pill cutter helps achieve the right dose. Give on an empty stomach 30-60 minutes before meals for best effect. You can also crush the tablet and mix with a small amount of wet food if your cat is difficult to pill.
Available Forms
tablet, injectable
Give with Food?
No — can be given without food
Side effects of Pepcid in cats
Common side effects
Serious side effects
- irregular heartbeat (rare)
- severe vomiting
- allergic reaction
When to call the vet
Call your vet immediately if your cat shows any of these signs:
- Vomiting continues despite treatment
- Refusing to eat for more than 24 hours
- Blood in vomit or stool
- Severe lethargy
- Signs of allergic reaction