Pain Alleviating Potential of Ethanol Extract of Vernonia amygdalina Del. on Writhing in Male Wistar Rats. Trop J Nat Prod Res [Internet]. 2024 May 1 [cited 2026 Jan. 10];8(4):7000-5. Available from: https://www.tjnpr.org/index.php/home/article/view/3930