Better sex in a bottle? Women everywhere are experimenting with products that supposedly give mattress action a major boost. Here, Cosmo explores this randy trend. (Bedroom Breakthrough).

* You've probably heard about guys who treat Viagra like carnal candy--they don't need the get-stiff-quick drug, they just pop it to give sex extra oomph. And though there's no equivalent prescription drug for females, there are a ton of over-the counter creams and gels that aim to give women their own booty boost. "Many women are trying out new products that increase sensation," says Jennifer Berman, M.D., director of the Female Sexual Medicine Center at UCLA. Here's everything you need to know about the sexual-enhancer craze.

what's out there?

Gels that warm up when you blow on them (like Toys in Babeland's Midnight Fire and Good Vibrations' Elbow Crease Hot Gel) can be used during oral sex, while K-Y Brand Liquid Warming Personal Lubricant gets warm on skin contact and from the friction generated during intercourse. Cooling products (like Vigel Passion Gel and O'My O Clitoral Stimulating Gel) usually contain menthol, which causes a cold-burn tingle. There are also products that aim to increase blood flow down there: Zestra uses plant-based oils; other products include an amino acid called L-arginine. Last, a lubricant that uses soybean oil, ProSensual, contains phytoestrogens--natural compounds that the manufacturers claim mimic human estrogen, a hormone that increases lubrication. Most of these products are available online from their company Web sites, sex-shop sites, or larger pharmacy-type retailers. Brands like K-Y and Vigel are available at drugstores.

do they really work?.

Because most of these products aren't regulated by the FDA, they don't have to be tested with clinical trials. But according to Dr. Berman, the heating and cooling products and Zestra, which voluntarily conducted its own clinical trial, are all likely to produce the sensations they claim. ...