Muse delivers alprostadil as a penile suppository, inserted into the urethra, at least ten minutes before the erection will be needed. Caverject and Edex are similarly fast-acting, but are actually injected directly into the corpus cavernosum of the penis.
NexMed is developing transdermal forumulations—Alprox-TD(R) for men with erectile dysfunction and Femprox(R) for female sexual arousal disorder. Alprox-TD(R) has been selling in China and in Hong Kong since October 2001 and April 2002, respectively. Two Phase III studies have been completed for this product, and the Company is seeking regulatory approval in the U.S., Canada and Europe.