SUBSTITUTED DIPHENYL SULPHIDES

Compounds, pharmaceutical preparations containing same, and method of treating depression in mammals, the compounds being of the formula I (I) or an acid addition salt thereof, particularly a pharmacologically or pharmaceutically acceptable salt thereof, where R and R1 are the same or different and are each hydrogen or lower alkyl, or R and R1 taken together are (CH2)X where X is 4 or 5, or NRR1 is where Y is 3 or 4 and R3 is hydrogen or lower alkyl, or NRR1 is where R2 is hydrogen or lower alkyl, in the above lower alkyl has 1 to 4 carbons and may be straight or branched and n and m are the same or different and are 1, 2, or 3.