Men and their physicians need not hesitate to use a drug proven effective in preventing prostate cancer out of concern that it is likely to cause sexual dysfunction, say authors of a study conducted by the Southwest Oncology Group.

Injecting botulinum toxin A, or Botox, into the prostate gland of men with enlarged prostate, eased symptoms and improved quality of life up to a year after the procedure, according to a study by researchers at the Chang Gung University Medical College, Taiwan, and the University of Pittsburgh School of Medicine.