There are several methods of birth control that are hormone-free. These include male and female condoms, diaphragms and caps, sponges, and the copper IUD. A diaphragm needs to be used with spermicide, a contraceptive gel, in order to be effective. The copper IUD is the most potent option, being over 99% effective at preventing pregnancy and lasts for ten years. None of these methods cause any unwanted side effects and can be used as often as needed.