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Pholcodine

Antitussive

Also known as 3-O-(2-morpholinoethyl) morphine

Antitussive
CDSCO approvedSchedule H
EXCRETION
not curated
INTERACTIONS
none in our sources
PREGNANCY
not curated

Mechanism

Pholcodine is a centrally acting antitussive agent. Although structurally related to opioids, it has no opioid-like actions because the substitution at the 3-position is not removed by metabolism. It is effective in reducing the frequency and intensity of coughing.

Indications

Cough suppression (when cough does not serve a useful purpose, causes annoyance, prevents rest/sleep, or hinders medication adherence)Chronic cough contributing to fatiguecough suppressant (used clinically in many countries outside the U.S.)

Dosing

Adult
separate dose, total quantity, etc); . for liquids, the total volume in millilitres (in both words and figures) of the preparation to be supplied; for dosage units (tablets, capsules, ampoules), state the total number (in both words and figures) of dosage units to be supplied (e.g. 10 tablets [of 10 mg] rather than 100 mg total quantity); . the dose, which must be clearly defined (i.e.…

Pharmacokinetics

Half-life
Long
Metabolism
Substitution at the 3-position is not removed by metabolism

Related guidelines

Other Antitussive drugs

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Sources: Goodman & Gilman 14e, BNF·Verified: 2026-05-13 · House clinical team