May cause: stroke, heart attack, blood clots, breast lumps, stomach pain, nausea, headaches. Does not prevent any Sexually Transmitted Diseases, and if not taken properly, pregnancy. So i take birth control to prevent a pregnancy and having to take care of a child at the age of 19 with someone who is not financially stable and who's mother is a tad crazy and hates me. Since i have started this new birth control which only lets me have a period every three months, and has a higher chance of causing blood clots and stroke since my body expects to bleed once a month but doesn't. I am scared about this fact since there is family history of blood clots and stroke, so when i fly this holiday season i convinced i will have a pulmonary embolism. Also dealing with airport security trying to take it away thinking its crack. I will have to argue that if he does not give me the pills that i will bill him with child support checks and hospital bills. I have to wonder why the FDA has not approved this male birth control that has been released in various European countries. What you have not heard about this? Well this is probably because America has this thought that if you have no sperm count you are impotent, even though this drug is less harmful to men then the affects of birth control on women. This country is so concerned about how manly everthing is that they wont become even a little more liberal and protect women from what they have to endure by taking birth control. Because this country is controlled by Republicans who didn't want abortion in the first place but then they use our argument that its your body you take care of it. So we need to be more proactive! Men if you see a clinical trial for this drug, participate! Women, participating in clinical trials for new birth control is a way to earn some cash and help find a more effective drug!