A method of treating amenorrhea in a non-depressed female comprises admin. of venlafaxine or a deriv. of formula (I) or one of its salts: A = a gp. of formula (i): R1, R7 = H or 1-6C alkyl; R2 = 1-6C alkyl; R4 = H, 1-6C alkyl, formyl or 2-7C alkanol; R5, R6 = H, OH, 1-6C alkyl, 1-6C alkoxy, 2-7C alkanoyloxy, CN, NO2, 1-6C alkylmercapto, NH2, 1-6C alkylamino, di(1-6C alkyl)amino, 2-7C alkanamido, halo, CF3, or together form methylenedioxy; n = 0-4.
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