70 patients, 69 male and 1 female, 23 suffering from subacute gonococcal urethritis and the other 47 suffering from acute gonococcal urethritis, have been treated with fosfomycin with the intramuscular method. The treatment was planned as follows: (1) in 12 patients a total dose of 4 g (2 g/4 h) was tried with 11 bacteriological and clinical cures (92%) and 1 failure; (2) in another 43 patients a single dose of 4 g was tried (2 g in each buttock), with 37 cures (86%) and 6 failures; (3) finally, in another group of 15 patients with subacute gonococcal urethritis, fosfomycin was administered at the rate of 2 g/8 h for 2 days, clinical and bacteriological cures being achieved in all patients (100%). The failures, a total of 7, are patients with subacute gonococcal urethritis who were given a single dose of 4 g.