1. The Japanese Pharmacopoeia. 16th edn. 2011.
2. Sweetman SC. Martindale: the complete drug reference. London: Pharmaceutical Press; 2011.
3. USP 38. The United States Pharmacopoeia. 38 edn. Rockville, MD; 2015.
4. Murthy TK, Reddy MN, Sankar DG. UV spectrophotomeric methods for the determinations of celecoxib and tizanidine hydrochloride. Indian J Pharm Sci. 2001:521–3.
5. Paladugu S, Divakar B, Rama HB, Ramu A, Mahesh U. Development and validation of new analytical method for the estimation of tizanidine hydrochloride in bulk and in formulation by UV spectrophotometric method. Int J Pharma Sci. 2013;3:403–7.