are oysters aphrodisacts???

Answer 1

The oyster just may be the most evocative culinary emblem of passion. But despite the powerful psychological persuasion of its suggestive appearance, the oyster falls quite low on the list of aphrodisiacs with scientifically proven potency.

Answer 2

In the case of oysters, probably the classic among the alleged aphrodisiacs, chemical analysis shows that it consists of water, protein and carbohydrates, plus small amounts of fat, sugar and minerals. None of these components is in any way known to affect sex drive or performance.
http://health.discovery.com/centers/sex/sexpedia/aphrodisiacs.html