Tizanidine
Also sold as: Sirdalud
Prescription neededMuscle relaxants
Comes as:Tablet
Usual adult dose
For short-term muscle spasm: usually 2 to 4 mg up to three times a day. For long-term stiffness the doctor starts with 2 mg and increases slowly; do not take more than 36 mg a day.
Your doctor may give you a different dose. Children's doses depend on weight.
Side effects
Common
- drowsiness
- dizziness
- dry mouth
- tiredness
- low blood pressure
Serious — get help
Stop taking it and see a doctor straight away if you notice:
- fainting
- very slow heartbeat
- yellow eyes or skin
- seeing things that are not there
Do not take it, or take care, if
- Taking ciprofloxacin (dangerous rise in tizanidine levels)
- Serious liver disease
- Kidney disease or older age (lower dose)
- Do not drink alcohol or drive if drowsy
Interactions
Medicines that can react with this one.
Serious1 medicineDo not take these together unless your doctor says so.
- Ciprofloxacin
Ciprofloxacin raises tizanidine levels many times and can cause very low blood pressure and fainting; do not use together.
Moderate1 medicineTake together only with care. Ask your doctor or pharmacist.
- Clonidine
Together they can cause low blood pressure and slow heartbeat.