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Clemastine Fumarate 1.34mg, 100 Tablets
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Generic Mfr Item #: 1016330 -

Clemastine Fumarate 2.68 mg, 100 Tablets
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Teva Pharmaceuticals Item #: 1013884 -

Dog Antihistamine

Clemastine Fumarate is an antihistamine for dogs and cats that's used to treat atopy, skin allergies, and relieve itching. Clemastine pet meds are an affordable alternative to other allergy medications. Clemastine is available in bottles of 100 tablets and 1.34 mg and 2.68 mg strengths.

Clemastine Fumarate is an antihistamine. It is used to treat atopy and allergies in dogs and cats. It soothes the itching related to these conditions.

Benefits of Clemastine:

  • Strong, long-lasting antihistamine
  • Allergy and atopy relief for your pet
  • For use in dogs and cats
  • Has a weaker sedative effect than other antihistamines
  • Easily administered oral tablets
  • Available over the counter
  • Affordable generic medication
  • Provides 12-hour relief from allergy-related itching
  • Does not require a prescription
  • Available in 1.34 mg and 2.68 mg oral doses

This product is intended for use in dogs and cats suffering from atopy or allergies. Do not give to other animals.

Keep out of reach of children. Do not allow children to administer Clemastine. Read directions and precautionary statements before use.

Ask your veterinarian about how to best treat your pet with Clemastine.


    1. Give dogs and puppies 1/2 to 1 tablet every 12 hours.
    2. Give cats and kittens 1/2 tablet every 12 hours.
    3. Administer the tablet orally by hand.

Dosages are based on 1.34 mg tablets. Ask your veterinarian about using 2.68 mg tablets for larger dogs.

Frequency of Use:

Give your pet one dose of Clemastine every 12 hours for as long as allergy relief is needed, unless your veterinarian advises otherwise. If you forget a dose, administer it when you remember it. However, if it is almost time for a subsequent dose, skip the missed dose and resume the regular schedule. Do not give your pet a double dose.


Store in original container and out of reach of children and animals.

Store Clemastine Fumarate at controlled room temperature.

It is a violation of Federal Law to use this product in a manner inconsistent with its labeling.

Clemastine is classified as a selective histamine H1 antagonist. It attaches to the histamine H1 receptor, blocking histamine to provide atopy and allergy symptom relief. Although it is not approved by the FDA for use in dogs and cats, such use is a common veterinary practice.

Active ingredients: Clemastine

Inactive Ingredients: Lactose Monohydrate, Magnesium Stearate, Microcrystalline Cellulose, Sodium Starch Glycolate


Keep Clemastine out of reach of children and animals. Do not use or store in or near open flame or heat.

This product is intended for use in dogs and cats.

Follow veterinary instructions for safe and effective use.

CAUTION: The most common side effect in cats is diarrhea. In dogs, Clemastine may cause dry mouth, drowsiness or sedation, or hyperactivity.

Allergic reactions to Clemastine are possible. Do not use in animals with a hypersensitivity to this medication.

Use with caution in dogs and cats with bladder conditions, enlarged prostate, severe cardiac failure, pylorus obstruction, or glaucoma.

Clemastine may interact with other drugs or supplements. Make sure your veterinarian knows everything your pet takes. Consult your veterinarian before beginning any other regimen.

Clemastine can contaminate the milk of lactating animals.

Due to the potential for a sedative effect, do not use in working dogs, such as seeing eye dogs or police and military dogs.

In case of overdose, seek veterinary care. In case of human overdose, contact your doctor or poison control immediately.

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