A member asked:

How long does zanaflex (tizanidine) stay in the system 2mg for back spasms?

A doctor has provided 1 answer
Dr. Brian Lee answered

Look up : Internet resources are abundant. You want to know the half life of the medicine which will tell you how many hours it takes to eliminate 50% of it from your system after ingesting it.

Answered 11/30/2013

4.7k views

Thank

Related Questions