title: [Clinical experience with methylcobalamin (CH3-B12) for male infertility].
abstract: CH3-B12 was administered daily (1,500 micrograms/day, for 4 to 24 weeks) to 26 infertile male patients who visited our clinic from January to December, 1982. It was not administered, however, to patients with azoospermia. Semen analysis was conducted from 8 weeks after the administration of CH3-B12. Sperm concentration increased in 10 cases (38.4%), total sperm counts increased in 14 cases (53.8%), sperm motility increased in 13 cases (50.0%) and total motile sperm count increased in 13 cases (50.0%). Semen volume, however, could not be evaluated due to wide variation. Serum LH, FSH and testosterone were unchanged. Judging by our criteria, 11 cases (42.3%) improved, 11 cases (42.3%) were unchanged and the remaining 4 cases (15.4%) had aggravated.
mesh_terms: D000328:Adult; D004341:Drug Evaluation; D006801:Humans; D007248:Infertility, Male / Q000188:drug therapy*; D008297:Male; D013076:Sperm Count; D013081:Sperm Motility / Q000187:drug effects; D014805:Vitamin B 12 / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000627:therapeutic use
chemical_list: C019476:mecobalamin; D014805:Vitamin B 12