Let's take a minute to talk about your medication. This is Norethindrone. It is often used as a birth control pill. It has other uses too, like helping with menstrual problems and treating endometriosis. You should take this medicine exactly as your doctor tells you to. You doctor will determine what dose is right for you and how often you should take it based on your condition. If you are taking this medicine for birth control, it is often taken once daily. Be sure to take Norethindrone at the same time each day. It is very important not to miss any doses. If you do miss a dose, miss your period, or want more information on when it will start working, read the Patient Information Sheet or contact your doctor or pharmacist. Most people tolerate this medicine well. Common side effects include nausea, vomiting, headache, breast tenderness, and light bleeding between periods. Some people will also have stomach cramping and bloating or hair loss. These effects are normal if they are mild, and should go away. If these or other side effects become reasons you want to stop taking this medicine, please talk to your doctor or pharmacist. As with any medicine, rare but serious side effects could occur. With Norethindrone, this includes a risk of blood clots, heart attack, or stroke. You should read the Patient Information Sheet to know which symptoms to watch for and when to report changes to your doctor. Norethindrone can interact with other medications. You should always check with your doctor or pharmacist before taking any other medicines. You should know that some interactions can make this medication less effective. If you miss your period or think you may be pregnant, do not take this medicine and talk to your doctor right away. Women should check with their doctors before breastfeeding. It is important to know that birth control pills do not protect you from sexually transmitted diseases. For best results with norethindrone, take it exactly as directed, and plan ahead for refills.