Cat Benadryl Dosage Calculator
Calculate safe diphenhydramine (Benadryl) dosages for cats to manage allergic reactions and itching.
Input Parameters
Enter details for calculation.
Recommended Dose
Expert Tip
Always use plain Benadryl (diphenhydramine only). Never use multi-symptom allergy or cold formulas, as ingredients like acetaminophen, decongestants, or alcohol are highly toxic to cats.
Calculation Methodology & Details
Formula
The standard feline dosage guidelines for Diphenhydramine (Benadryl) is 1 mg per pound of body weight (equivalent to 2.2 mg/kg) administered every 8 to 12 hours.
Important Disclaimer
All veterinary dosage guidelines and calculations are for educational purposes only. Always consult a licensed veterinarian before administering any medication to your cat.
How to Calculate Benadryl Dosing: Step-by-Step
Calculate safe dosage values using this protocol:
Determine Weight in Pounds
Convert kg weight by multiplying by 2.20462 if needed.
Calculate Daily Target in mg
Multiply the lbs weight by 1.0 to get target mg.
Check Liquid or Tablet volume
Divide the mg requirements by the formulation strength to find the target dose volume.