About biperiden hydrochloride
Anticholinergic antiparkinsonian medicine
Used for
- Treats Parkinson’s disease symptoms, especially stiffness and tremor.
- Treats movement problems caused by certain antipsychotic medicines.
Usual adult dose
Usually 2.5–5 mg by injection; repeat cautiously if needed, according to the indication and local product guidance.
Common side effects
- Dry mouth, blurred vision, constipation, or difficulty urinating.
- Drowsiness, dizziness, or confusion.
- Fast heartbeat or reduced sweating.
Important warnings
- May cause confusion, hallucinations, or worsening memory, especially in older adults.
- Use caution with glaucoma, urinary retention, bowel obstruction, or heart rhythm problems.
- Avoid overheating; reduced sweating can cause heat illness.
- Injection dosing and monitoring should be managed by a healthcare professional.
Pregnancy
Use only when clearly needed; pregnancy safety information is limited.
Breastfeeding
Avoid or use only with specialist guidance; it may reduce milk production.
Interactions
- Other anticholinergic medicines can increase side effects.
- Amantadine and some antihistamines may increase confusion or dry mouth.
- Medicines that slow stomach movement may affect absorption of other medicines.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.