Men with spinal-cord injuries reported improvements in their sex lives after taking Cialis, Icos' erectile dysfunction drug. The Bothell company reported data from a study of 186 patients, sending its stock up $1.82, or 8.3 percent, to close at $23.76 today. The men treated with the drug reported successful sexual intercourse in 47.6 percent of attempts, compared to 10.8 percent at baseline.