Cat Benadryl Dosage Calculator

Calculate the appropriate Benadryl (diphenhydramine) dosage for your cat based on weight and age. Benadryl is commonly used for allergy symptoms, motion sickness, or mild anxiety in cats.

Input Parameters

Calculation Results

Dosage Recommendation

-- Enter cat weight to calculate --

Dosage Formula

The recommended dosage is 1 mg of Benadryl per pound of body weight, given every 8-12 hours.

Where:
• 1 mg = 10 mg (standard liquid Benadryl dose)
• Dosage is based on cat weight in pounds
• Multiple doses may be needed for continuous symptom relief

Important Notes

  • Use 10mg liquid Benadryl (diphenhydramine) per dose
  • Maximum daily dose: 5 mg per pound of body weight
  • Do not exceed 2 doses in 24 hours
  • Consult your veterinarian before use, especially for pregnant or nursing cats

Cat Benadryl Dosage Calculator Calculator Usage Guide

Learn how to safely use Benadryl for your cat and understand its effects and precautions

How to Use This Calculator

  1. Enter your cat's weight in pounds (accurate weight is essential for proper dosage)
  2. Enter your cat's age in years
  3. Select the reason for giving Benadryl from the options provided
  4. Click the "Calculate" button to see the recommended dosage
  5. Follow the administration instructions carefully

Understanding Benadryl for Cats

Benadryl (diphenhydramine) is an over-the-counter antihistamine commonly used in cats for various conditions. The active ingredient is diphenhydramine, which works by blocking histamine receptors in the body.

Common Uses in Cats

  • Allergies: Seasonal allergies, environmental allergies, or reactions to medications
  • Motion Sickness: Helps prevent nausea and vomiting during car rides or travel
  • Mild Anxiety: Can help calm anxious or stressed cats in certain situations
  • Sleep Aid: Occasionally used for short-term sleep assistance (use with caution)

Important Precautions

While Benadryl is generally considered safe when used appropriately, there are important precautions to keep in mind:

  • Never give Benadryl to cats with glaucoma, heart disease, or urinary tract issues without veterinary approval
  • Do not give to pregnant or nursing cats without consulting a veterinarian
  • Some cats may experience side effects including drowsiness, dry mouth, or dilated pupils
  • Do not give with other medications containing diphenhydramine
  • Seek veterinary attention immediately if your cat shows signs of excessive sedation or other concerning symptoms

When to Consult Your Veterinarian

Always consult your veterinarian before giving Benadryl to your cat, especially if:
- It's your cat's first time receiving Benadryl
- Your cat has pre-existing health conditions
- You're unsure about the appropriate dosage
- Your cat shows any adverse reactions after administration