Tenavax Tenavax (Tizanidine HCl(USP) used for painful muscle spasms. Pack contains: One pack of this medicine contains 14 tablets each of 2mg. It is also available in Tenavax 4mg. Composition: Each film coated tablet contains: Tizanidine (as HCl) 2mg Product complies: USP Specifications. Dosage: Use as directed by the physician. For further information please read… Continue reading Tenavax