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Trihexyphenidyl

Trihexyphenidyl is a covered generic medication on Tab's $0 list. Here's what it's used for, typical dosing, and side effects, sourced from FDA-approved drug labeling.

$0 with active Tab membership Oral

What it's used for

Trihexyphenidyl is used as an adjunct in treating all forms of parkinsonism and for controlling extrapyramidal disorders caused by central nervous system drugs.

Source: U.S. FDA-approved prescribing information (openFDA).

Typical dosing

Dosage should be individualized, starting at a low dose and increasing gradually, especially in patients over 60 years of age.

Dosing shown here is the general FDA-labeled range. Your prescribing clinician determines the exact dose, form, and schedule for you — this is not a substitute for medical advice.

Boxed warning / key safety info

Anticholinergic drugs may precipitate angle closure with an increase in intraocular pressure, so patients should be evaluated prior to therapy.

Common side effects

Minor side effects such as dry mouth, blurred vision, dizziness, mild nausea, or nervousness are experienced by 30 to 50 percent of patients.

Covered strengths on the Tab $0 list

Trihexyphenidyl 2mg TabletTrihexyphenidyl 2mg/5 mL ElixirTrihexyphenidyl 5mg Tablet

Covered at $0 with an active Tab membership when filled at a participating pharmacy nationwide or through mail order. A licensed clinician must prescribe the medication.

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Tab is a membership and prescription-discount program—not insurance, and not a substitute for it. $0 pricing applies to medications on the current covered generic list with active membership, at participating pharmacy locations nationwide or through mail order, and is subject to change. Mail-order home delivery is preferred for recurring prescriptions; activation, availability, and delivery timing apply. This page is for general reference, drawn from FDA-approved drug labeling, and is not medical advice. Only a licensed clinician can determine if a medication is right for you.