Wiktionary
vitamin v
n. (context slang English) the drug, sildenafil citrate, used to treat erectile dysfunction; from the initial of the name brand Viagra
Usage examples of "vitamin v".
It also contains vitamin C, vitamin D, vitamin E, vitamin F, vitamin G, vitamin I, vitamin J, vitamin K, vitamin L, vitamin M, vitamin N, vitamin O, vitamin P, vitamin Q, vitamin R, vitamin T, vitamin U, vitamin V, vitamin W, vitamin X, vitamin Y, and, believe it or not, vitamin Z!