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Recurring Saings in EprxAUTOSHIP & SAVE[Details]
Recurring Saings in EprxAUTOSHIP & SAVE[Details]
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Vetadryl is made by PRN Pharmacal, which has developed quality veterinary products for the past 30 years. This product from the makers of Proin is designed to help pets with conditions such as allergies, insect bites, motion sickness and travel anxiety. The dried chicken liver flavor of each tablet makes administering the medication less of a hassle.

Key Benefits

  • Can be given as a treat, making administration easy
  • Sold/dispensed in the clinic to retain control of patient care
  • Readily available and convenient for the pet owner to take home and administer
  • Clients save money over human-labeled product without sacrificing results


  • Flavor-tested: preferred 7x more than diphenhydramine capsules*
  • Formulated exclusively for veterinary use
  • Manufactured in two strengths and scored for flexible dosing
  • Priced competitively with generics

Suggested Uses:

Diphenhydramine HCI has been used as an aid in the management of:

  • Atopic dermatitis
  • Allergies
  • Insect bites
  • See dosing chart at right for administration and all indications


Diphenhydramine HCl, Dibasic Calcium Phosphate Dihydrate, Spray Dried Chicken Liver, Whey, Dry Garlic Flavor, Microcrystalline Cellulose, Dark Brown Lake Blend, Stearic Acid.


2-4 mg/kg every 12 hours by mouth, or as directed by your veterinarian.
Vetadryl 10 - Number of tablets to give every 12 hours per body weight
5-10 lbs 1 tablet
10-15 lbs 1-2 tablets
15-20 lbs 2 tablets
20-25 lbs 2-3 tablets
25-30 lbs 3 tablets
Vetadryl 30 - Number of tablets to give every 12 hours per body weight
30-50 lbs 1 tablet
55-65 lbs 1-2 tablets
70-100 lbs 2 tablets
100-130 lbs 2-3 tablets

Should not be used in pregnant or nursing animals. Do not use in combination with sinus or cold medicines in your pet.

Storage & Safety:

  • Use as instructed by a licensed veterinarian
  • Store at room temperature 15-30°C (59-86°F)
  • Keep out of reach of children and animals
  • Not for human use

Possible Side Effects

Side effects that usually are not serious include: The most common side effect, which is often desirable, is sleepiness. Most animals will become tolerant to this effect with time and will not get as sleepy when given the medication. Cats, in particular, may become unusually excited while taking this drug. Dry mouth and trouble urinating (eg, straining) are possible but not common. Infrequently, diphenhydramine may cause gastrointestinal distress such as vomiting, decreased appetite, or diarrhea. You don’t have to be overly concerned if you see any of these signs unless they are severe, worsen, or continue to be a problem. Contact your veterinarian if this happens.


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).


Federal law restricts this drug to use by or on the order of a licensed veterinarian.

Keep out of reachof children and animals

For veterinary use only

Not for human use

The safety of this product in breeding animals is unknown. Do not use this product in breeding animals.

Adverse Reactions:

T o report adverse reactions, call Pegasus Laboratories at 1-800-874-9764.

Overdose Information:

A diphenhydramine overdose can cause CNS stimulation (lethargy, somnolence), anti-cholinergiceffects (dry mouth, urinary retention), and GI effects (diarrhea, vomiting, anorexia). This product maycause paradoxical excitement in cats. Contact your veterinarian if your animal experiences any of theabove conditions after taking this product.


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.
For use in cats and dogs.
Diphenhydramine manages motion sickness, insect bites, allergies, and atopic dermatitis in cats and dogs.
Diphenhydramine blocks histamine, a natural substance created by the body during allergic reactions.

Overdose of diphenhydramine HCI may lead to:

  • Gastrointestinal effects, including anorexia, vomiting, or diarrhea
  • Anticholinergic effects, including urinary retention or dry mouth
  • Central nervous system stimulation, including somnolence or lethargy

This medication may result in paradoxical excitement when administered to a cat.

If your pet exhibits these or any other reactions, speak to your veterinarian.

Keep out of reach of animals and children.
Contact your closest emergency pet hospital.

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