sildenafil

Etymology
Probably from.

Noun

 * 1)  A drug that is used in the form of its citrate C22H30N6O4S·C6H8O7 to treat erectile dysfunction in males, that by suppressing a phosphodiesterase enzyme also suppresses the enzyme's inhibitory effect on the hormone, and that enables the cyclic GMP produced during  to initiate the muscular and vascular changes which produce an erection. It is marketed under the trademarks Revatio and Viagra.

Translations

 * Finnish: sildenafiili