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Cyproheptadine CYPRO

An older allergy medication that also happens to stimulate appetite, so doctors sometimes prescribe it off-label to help underweight patients gain weight. Long clinical use backs up the appetite effect, though it commonly makes people drowsy.

Also known as Periactin, Periactinol, Eiproheptadine, Dronactin, Ciproheptadina, Cyproheptadinum, Ciprovit, MK 141

Effects Build muscle

Routes Oral

Legal status Prescription drug

WADA Not listed

3D Molecular Structure of C₂₁H₂₁N

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Chemistry

Formula: C21H21N
Molar mass: 287.4
CAS: 129-03-3
PubChem CID: 2913
IUPAC name: 1-methyl-4-(2-tricyclo[9.4.0.03,8]pentadeca-1(15),3,5,7,9,11,13-heptaenylidene)piperidine
InChIKey: JJCFRYNCJDLXIK-UHFFFAOYSA-N

Reported dosing

Approved label

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose 4 mg per dose

Reported range 4-20 mg/day

Route Oral

Frequency 3-4 times daily

Duration As prescribed, or short-term off-label use

FDA-approved antihistamine (Periactin) also used off-label as an appetite stimulant.

Where this comes from FDA prescribing information

These figures are recorded for reference and are not a recommendation. Dosing is a decision for you and a clinician.