Trihexyphenidyl
Trihexyphenidyl is an anticholinergic used for selected movement symptoms. It can impair memory, vision, urination and heat regulation. Listed uses include Parkinson’s disease and drug-induced extrapyramidal symptoms.
Key points
- It may help tremor or rigidity but can worsen confusion, especially in older adults.
- Reduced sweating can cause dangerous overheating.
- Do not stop suddenly after regular use without a clinician plan.
Listings are for comparison only; suitability and supply depend on neurological assessment, prescription and pharmacy checks.
Important safety checks
Review glaucoma, urinary retention, bowel obstruction, dementia, heart disease, heat exposure and other anticholinergic medicines.
When to seek urgent care
Seek urgent help for severe confusion, overheating with inability to sweat, severe eye pain, inability to urinate, bowel obstruction symptoms, facial swelling or breathing difficulty.