Cyproheptadine 4 mg Tablets — Generic For Periactin — Quagen

Medication Summary

Medication Summary: This section summarizes DailyMed drug label information to make the label easier to understand. It is not a substitute for the official label, pharmacist counseling, prescriber instructions, or medical advice.

Overview

Cyproheptadine hydrochloride tablets are an oral prescription medicine with antihistaminic and antiserotonergic effects. The label describes cyproheptadine as a serotonin and histamine antagonist with anticholinergic and sedative effects.

The tablets are used for allergic conditions such as perennial and seasonal allergic rhinitis, vasomotor rhinitis, allergic conjunctivitis due to inhalant allergens and foods, mild allergic skin reactions like urticaria and angioedema, cold urticaria, and dermatographism. The label also lists use as adjunctive therapy for anaphylactic reactions after the acute manifestations have been controlled.

The product contains 4 mg of cyproheptadine hydrochloride per tablet. Inactive ingredients include lactose monohydrate, magnesium stearate, microcrystalline cellulose, and sodium starch glycolate.

Storage Information

Dispense in a well-closed container as defined in the USP, with a child-resistant closure (as required). Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature].

Key Counseling Points

• This medicine may cause drowsiness or sedation.
• It may also cause dizziness or reduced mental alertness.
• Use caution with driving or operating machinery until you know how it affects you.
• Alcohol and other CNS depressants may have additive effects with this medicine.
• The label notes it can occasionally cause excitation, especially in young children.
• Overdose can cause serious effects, including hallucinations, seizures, breathing problems, or cardiac arrest.
• Tell a clinician if you have a history of asthma, increased eye pressure, hyperthyroidism, cardiovascular disease, or hypertension, since the label says caution is needed.
• The tablet is for oral use and contains 4 mg of cyproheptadine hydrochloride.
• Safety and effectiveness below age 2 have not been established.
• The label lists possible side effects including dry mouth, blurred vision, constipation, urinary retention, and weight gain.

Helpful Patient Education

Cyproheptadine hydrochloride tablets USP are an oral prescription antihistamine and antiserotonergic medicine. The DailyMed label describes their use for allergic rhinitis, allergic conjunctivitis, urticaria, angioedema, cold urticaria, dermatographism, and adjunctive treatment of anaphylactic reactions after acute symptoms are controlled.

Each tablet contains 4 mg of cyproheptadine hydrochloride. The label also notes that the medicine may cause sedation, dizziness, and other anticholinergic effects, and that caution is needed with alcohol, other CNS depressants, and activities requiring mental alertness.

Medication Summary last generated: 2026-07-17 03:00:18