Evaluation of effects of Spilanthes acmella extract on muscle mass and sexual potency in males

Spilanthol, an active metabolite of the herb Spilanthes acmella, has many biological and pharmacological effects with limited studies on humans.To determine the extent of increase/decrease in muscle mass and sexual frequency over a period of 3 weeks and 2 months in participants consuming SA3X capsules (containing 500 mg of Spilanthes acmella extract, standardized to 3.5% spilanthol delivering 17.5 mg spilanthol).The study is longitudinal in nature and is conducted among 240 male participants consuming SA3X capsules at three points - first at recruitment, second at the end of 3 weeks, and lastly at the end of 2 months in Hyderabad and Secunderabad who were assessed for muscle gain by measuring mid upper-arm circumference (MUAC), chest circumference (CC), thigh circumference (TC), and for sexual activity by a change in frequency of sexual activity and duration of penile erection. The nutrient intake was assessed by 24-h dietary recall method at each visit along with the daily activity.A significant increase in the MUAC, (P = 0.050), frequency of sexual intercourse (P = 0.028), and duration of penile erection (P = 0.032) were observed at the end of 3 weeks; however, no changes were observed in CC and TC. At the end of 2 months, a significant increase in the parameters MUAC (P = 0.031), frequency of sexual intercourse (P < 0.001), duration of penile erection (P = 0.029) along with significant increase in CC; (P = 0.048) and TC; (P = 0.036) was observed.The study reflects the herb Spilanthes acmella to be a potent muscle gainer and aphrodisiac. However, further studies on humans need to be carried out to establish the temporality of the association of spilanthol with its claimed benefits.