Sex Enhancement Raw Powder Series Yohimbine Hydrochloride / Yohimbine HCL Abstract Yohimbine has been shown in human studies to be effective in the treatment of male impotence. Yohimbine has been shown to be effective in the treatment of orgasmic dysfunction in men. Yohimbine has also been used to treat hypoactive sexual desire disorder (reduced libido) in women. Increase muscular tension …