To my knowledge it doesn't actually enhance your libido, but when used in conjunction with typical antidepressants such as SSRI's or SNRI's, it can help counteract the loss of libido.

On the other hand, Viibryd sometimes has the side effect of actually increasing libido. Sometimes very significantly. But Viibryd can have some issues such as exacerbating anxiety issues and it carries one heck of a punch when you're trying to ramp up to a therapeutic dose. ... talk about a sick tummy ...