Vetadryl (Diphenhydramine HCl) Tablets for Dogs & Cats

Prescription Item

  • Price:


In stock
Strength: 10-mg
  • 10-mg In stock
  • 30-mg In stock
Count: 30 count
  • 30 count In stock
  • 250 count In stock

This item requires prescription approval. Details

Medications ship separately. Delivery times may vary. Details

We'll collect your pet's prescription information at Checkout.

cw-icon-heart Created with Sketch. Add to Favorites

If your pet struggles with seasonal allergies, Vetadryl may be able to help. These easy-to-feed, flavored, chewable tablets are specifically formulated to help with the unpleasant symptoms of allergies, and they may also help relieve motion sickness, as well as the symptoms of bug bites. Vetadryl is available in two strengths to easily dose your pet at the strength he needs for relief.


For use in animals where antihistamine treatment is indicated.


For oral use only. Use under veterinary supervision. Common side effects may include sedation, ataxia, reduced coordination, gastric upset, thickening of bronchial secretions, and increased urine output. Do not use in patients with known hypersensitivity to diphenhydramine, other antihistamines with similar chemical structure, or any ingredient in the formulation. Use with caution in patients with glaucoma, history of gastric irritation or ulcer, bowel or bladder obstruction, prostatic hypertrophy, active or a history of lower respiratory disease (e.g., bronchial asthma), hyperthyroidism, seizures or cardiovascular disease (e.g., hypertension).

This product now requires a veterinary prescription to ship. Simply provide your vet's information during checkout and we'll follow up to confirm the prescription.

  1. Package Insert

See all items by Vetadryl

  • Item Number
  • Brand


  • Dosage Measure

    Use according to your veterinarian's instructions.

  • For Use With

    Dogs & Cats

  • Generic Name

    Diphenhydramine Hydrochloride

  • Breed Size

    Small Breeds, Medium Breeds, Large Breeds

  • Product Form

    Chewable Tablet

  • Health Condition

    Allergies, Motion Sickness

  • Drug Type



Diphenhydramine HCl (10 mg), Dried Chicken Liver Flavoring.

Recommended Dosage

Use according to your veterinarian's instructions.

Storage Instructions

Store at room temperature 59-86°F.


What is Vetadryl?

Vetadryl is a liver-flavored diphenhydramine HCl tablet formulated in strengths specifically for dogs and cats – to minimize the risk of administering the incorrect amount, which can harm your pet. Tablet strengths are available in 10mg and 30mg for flexible dosing.

Customer Reviews
2 Reviews 2 Reviews 3 out of 5 Stars

50% Recommend

50% of reviewersrecommend this product

3 / 5

You've Already Reviewed This Item

Showing 2 Reviews

Sort by:
Filter by:
  • Not what you think as a chewable

    By on

    I bought these because my AmStaff is constantly getting mast cell tumors. As they're histamine related my vet thought a regimen of Benadryl might reduce the frequency of occurrence. Technically these are probably chewable tablets I suppose. But they're small and hard, like a typical small aspirin tablet and my dog just spits them out because they're too small to chew. Something larger like a training treat that's a bit soft would be perfect.

    You liked it! Something went wrong. Please try again later. Report
  • Best ever!

    By on

    These are amazing. Stopped the itching AND helped to relax dogs so I could trim nails!

    You liked it! Something went wrong. Please try again later. Report