Amreen A, KV R. FORMULATION AND EVALUATION OF TRAMADOL HYDROCHLORIDE-LOADED NIOSOMAL GEL BY ETHER INJECTION METHOD. Asian J Pharm Clin Res [Internet]. 2023 May 7 [cited 2025 Dec. 6];16(5):170-3. Available from: https://www.journals.innovareacademics.in/index.php/ajpcr/article/view/47133