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Tizanidine: uses, side effects & brands
Tizanidine eases muscle spasm and spasticity. It belongs to the Muscle relaxant group. These ease muscle spasm and stiffness in back pain, neck pain and muscle injuries.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Muscle relaxant |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Spasticity from multiple sclerosis or spinal cord injury
- Spasticity after stroke or brain injury
- Painful muscle spasm (some countries)
Common brand names
- India: Sirdalud, Tizan, Brentzo
- Worldwide: Zanaflex
Common side effects
- Drowsiness
- Dry mouth
- Dizziness or low blood pressure
- Weakness or tiredness
Before taking it — precautions
- Do not take with ciprofloxacin or fluvoxamine (they raise its level dangerously)
- Tell your doctor about liver or kidney disease or low blood pressure; liver tests may be needed
- Do not stop suddenly after regular use; avoid alcohol
When to see a doctor urgently
- Fainting or very slow heartbeat (urgent)
- Yellow eyes or skin or dark urine
- Fast heartbeat and high blood pressure after stopping suddenly
Not a prescription — no dose shown. The right dose of tizanidine depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
Why can't I take tizanidine with some antibiotics?
Ciprofloxacin and fluvoxamine block its breakdown and can cause a severe drop in blood pressure and extreme drowsiness.
Why do I feel dizzy on tizanidine?
It can lower blood pressure, especially on standing. Get up slowly.
Can I stop tizanidine suddenly?
No. Stopping suddenly after regular use can cause a rebound rise in blood pressure and heart rate.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.