As if finding the right guy wasn't hard enough. Now you've got to find the right birth control pill. Yasmin knows the secret to both is good chemistry. A pill that works with your body chemistry? Yasmin is the only birth control pill that affects the excess sodium and water in your body while also maintaining, or in some cases increasing your potassium. That's because Yasmin contains a different kind of hormone, which makes it a different kind of pill. And or course, it's a low-does pill that's clinically proven to be over 99% effective at preventing pregnancy. Talk to your campus clinic about Yasmin. Even if the guy turns out to be wrong, you could end up with the right pill.