Cyproheptadine HCl (Generic) Tablets, 4-mg, 1 tablet

Prescription Item

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Cyproheptadine HCI is an antihistamine prescribed to help relieve symptoms caused by seasonal, food and plant allergies, including mild and uncomplicated allergic skin reactions, such as hives or swollen tissue. This medication may also be used to help treat asthma. Customers may receive this drug under the name Periactin.


Cyproheptadine is indicated in the treatment of allergies and asthma. It can also be used to stimulate appetite.

Possible Side Effects

Instances of drowsiness and paradoxica (a symptom that causes excitement) have been reported.

Drug & Food Interactions

Talk to your veterinarian about any other drugs the pet is taking before starting this medication.


Cyproheptadine should be used with caution in those with a history of bronchial asthma, increased intraocular (fluid in the eye) pressure, hyperthyroidism, cardiovascular disease and hypertension.

NOTE: For Generic Medications, picture displayed may not depict actual product. Generic medications may vary from one order to the next by size, color and shape depending on manufacturer. Customers may receive the same drug under the name Periactin.

This drug is FDA-approved for human use. However, it is common practice for veterinarians to prescribe such drugs for use in dogs and cats.

  1. Prescribing Information

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  • Item Number
  • Brand


  • Dosage Measure

    Use according to your veterinarian's instructions.

  • Generic Name

    Cyproheptadine Hydrochloride

  • Common Brand Name(s)


  • For Use With

    Dogs & Cats

  • Product Form


  • Health Condition


  • Drug Type



Cyproheptadine Hydrochloride.

Recommended Dosage

Always follow the dosage instructions provided by your veterinarian.

Storage Instructions

Store at temperatures between 68° - 77°F.


What is Cyproheptadine?

Cyproheptadine is used to treat multiple conditions in animals. In dogs and cats, it is used as an antihistamine and as a treatment for a disease called serotonin syndrome. In cats, it also works as an appetite stimulant.

What are the benefits of Cyproheptadine?

Management of serotonin syndrome and, in cats, as an appetite stimulant. Used for the treatment of allergies and asthma in pets

How is this medication given?

Use as directed by your veterinarian.

How does this medication work?

As an appetite stimulant, antihistamine and treatment for serotonin syndrome, Cyproheptadine will generally start to work within several hours, but several daysof therapy may be needed to achieve the full effect.

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