Skip to Content

W 4 (Trihexyphenidyl Hydrochloride 2 mg)

Pill with imprint W 4 is White, Round and has been identified as Trihexyphenidyl Hydrochloride 2 mg. It is supplied by West-Ward Pharmaceutical Corporation.

Trihexyphenidyl is used in the treatment of extrapyramidal reaction; cerebral spasticity; parkinson's disease and belongs to the drug class anticholinergic antiparkinson agents. FDA has not classified the drug for risk during pregnancy. Trihexyphenidyl 2 mg is not a controlled substance under the Controlled Substances Act (CSA).

Images for W 4

Trihexyphenidyl Hydrochloride

W 4
2 mg
Prescription only
Drug Class:
Anticholinergic antiparkinson agents
Pregnancy Category:
N - Not classified
CSA Schedule:
Not a controlled drug
Labeler / Supplier:
West-Ward Pharmaceutical Corporation
Inactive Ingredients:
lactose anhydrous
silicon dioxide colloidal
corn starch
magnesium stearate
microcrystalline cellulose
Note: Inactive ingredients may vary.

Get help with Imprint Code FAQs.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.