Generated automatically from the NAFDAC register, WHO alerts and community data as of today. This is not medical advice. Always follow your doctor or pharmacist.
From the official U.S. FDA label for trihexyphenidyl hydrochloride (benzhexol hydrochloride), the active ingredient registered with NAFDAC.
Trihexyphenidyl is indicated as an adjunct in the treatment of all forms of parkinsonism (postencephalitic, arteriosclerotic, and idiopathic). It is often useful as adjuvant therapy when treating these forms of parkinsonism with levodopa. Additionally, it is indicated for the control of extrapyramidal disorders caused by central nervous system drugs such as the dibenzoxazepines, phenothiazines, thioxanthenes, and butyrophenones.
Minor side effects, such as dryness of the mouth, blurred vision, dizziness, mild nausea or nervousness, will be experienced by 30 to 50 percent of all patients. These sensations, however, are much less troublesome with trihexyphenidyl than with belladonna alkaloids and are usually less disturbing than unalleviated parkinsonism. Such reactions tend to become less pronounced, and even to disappear, as treatment continues. Even before these reactions have remitted spontaneously, they may often be controlled by careful adjustment of dosage form, amount of drug, or interval between doses. …
Trihexyphenidyl is contraindicated in patients with hypersensitivity to trihexyphenidyl or to any of the other ingredients. Trihexyphenidyl is also contraindicated in patients with narrow angle glaucoma. Blindness after long-term use due to narrow angle glaucoma has been reported.
Patients to be treated with trihexyphenidyl should have a gonioscope evaluation prior to initiation of therapy and close monitoring of intraocular pressures. The use of anticholinergic drugs may precipitate angle closure with an increase in intraocular pressure. If blurring of vision occurs during therapy, the possibility of narrow angle glaucoma should be considered. Blindness has been reported due to aggravation of narrow angle glaucoma. (See CONTRAINDICATIONS and ADVERSE REACTIONS ). …
Pregnancy Teratogenic Effects Pregnancy Category C Animal reproduction studies to evaluate teratogenic and embryotoxic potential have not been conducted with trihexyphenidyl. It is also not known whether trihexyphenidyl can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Trihexyphenidyl should be given to a pregnant woman only if clearly needed.
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Benzhexol Hydrochloride Tablet contains Trihexyphenidyl Hydrochloride (Benzhexol Hydrochloride) (5 mg), as tablet, according to its NAFDAC registration record.
Yes. Benzhexol Hydrochloride Tablet is listed on the NAFDAC register under registration number A4-101052, and its registration is active as of 28 October 2026.
No WHO falsified or substandard medical product alert currently matches Benzhexol Hydrochloride Tablet in our automatically synced alert list.
Run a free authenticity scan with the NAFDAC number A4-101052, your pack's expiry date and batch number to get a Trust Score, compare the pack with the NAFDAC record (ingredient, strength, form, manufacturer), and buy only from licensed pharmacies.
Trihexyphenidyl is indicated as an adjunct in the treatment of all forms of parkinsonism (postencephalitic, arteriosclerotic, and idiopathic). It is often useful as adjuvant therapy when treating these forms of parkinsonism with levodopa. Additionally, it is indicated for the control of extrapyramidal disorders caused by central nervous system drugs such as the dibenzoxazepines, phenothiazines, th (Summarised from the official U.S. FDA label for trihexyphenidyl hydrochloride (benzhexol hydrochloride). Always follow your doctor or pharmacist.)
Reviews are personal experiences from PillVera users, not medical advice. Report side effects to your doctor and to NAFDAC.