Orphenadrine
Also sold as: Norflex, Norgesic
Prescription neededMuscle relaxants
Comes as:TabletInjection
Usual adult dose
Usual adult dose: 100 mg two times a day (long-acting tablets). Combination tablets with paracetamol: follow the dose on the pack and do not take other paracetamol at the same time. Use for short periods only.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- dry mouth
- drowsiness
- dizziness
- blurred vision
- constipation
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- unable to pass urine
- fast or irregular heartbeat
- confusion
Do not take it, or take care, if
- Narrow-angle glaucoma
- Enlarged prostate or trouble passing urine
- Myasthenia gravis
- Older people (more confusion and falls)
Interactions
Medicines that can react with this one.
Moderate1 medicineTake together only with care. Ask your doctor or pharmacist.
- Amitriptyline
Both have anticholinergic effects; together they increase dry mouth, constipation, urine retention and confusion.