8. After addiction, withdrawal from the use of caffeine can cause mood swings and irritability, similar to the symptoms of withdrawing from a narcotic or alcohol. 9. Consuming as little as 200mg of caffeine every day can lead to addiction and altered chemistry in the brain.
Progestin is a form of progesterone, a hormone that plays a role in the menstrual cycle and pregnancy. Progestin is used in combination with another hormone called estrogen in combined hormonal birth control pills, the vaginal ring, and the skin patch.
Birth control pills usually contain one or two hormones. These hormones prevent egg release from the ovaries. It also causes changes in the cervical mucus and uterine lining which may make it more difficult for sperm to fertilize an egg. Birth control comes in many forms, but is commonly prescribed in pill form. Patches and injections are alternatives to pills. Common hormone combinations include estrogen / progestin / folate combinations, estrogen / progestin / iron combinations, estrogen / progestin combinations, and progestins.