Influence of different formulation variables on the performance of transdermal drug delivery system containing tizanidine hydrochloride: in vitro and ex vivo evaluations. Braz. J. Pharm. Sci. [Internet]. 2018 Dec. 20 [cited 2024 May 3];54(4):e00130. Available from: https://revistas.usp.br/bjps/article/view/159053