30 Aug 2010
The Zanaflex contains Tizanidine and is used as antispastic in MS and spinal injury. The half life of Tizanidine is 2.5 hours but its metabolites have half life of 20-40 hours. So the single dose will take 80-90 hours to get out of system and in hair follicle test it will take 90 days.
- Tizanidine Information for Consumers
- Tizanidine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Tizanidine (detailed)
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