 Other brand names include "Urorec" (European Union), "Silotrif", "Silorel" (Jamaica), "Sildoo", "Silodal", "Silodosia", "Silofast" (India) "Thrupas" (South Korea), "Flopadex" (Egypt), and "Urorec" (Russia).As α1A adrenoceptor antagonists are being investigated as a means to male birth control due to their ability to inhibit ejaculation but not orgasm, a trial with 15 male volunteers was conducted.While silodosin was completely efficacious in preventing the release of semen in all subjects, 12 out of the 15 patients reported mild discomfort upon orgasm.