Medroxyprogesterone Injection
Medroxyprogesterone injection may decrease the amount of calcium stored in your bones. The longer you use this medication, the more the amount of calcium in your bones may decrease. The amount of calcium in your bones may not return to normal even after you stop using medroxyprogesterone injection.
Loss of calcium from your bones may cause osteoporosis (a condition in which the bones become thin and weak) and may increase the risk that your bones might break at some time in your life, especially after menopause (change of life).
The amount of calcium in the bones usually increases during the teenage years. A decrease in bone calcium during this important time of bone strengthening may be especially serious. It is not known whether your risk of developing osteoporosis later in life is greater if you start to use medroxyprogesterone injection when you are a teenager or young adult. Tell your doctor if you or anyone in your family has osteoporosis; if you have or have ever had any other bone disease or anorexia nervosa (an eating disorder); or if you drink a lot of alcohol or smoke a great deal. Tell your doctor if you take any of the following medications: corticosteroids such as dexamethasone (Decadron, Dexone), methylprednisolone (Medrol), and prednisone (Deltasone); or medications for seizures such as carbamazepine (Tegretol), phenytoin (Dilantin), or phenobarbital (Luminal, Solfoton).
You should not use medroxyprogesterone injection for a long time (e.g., more than 2 years) unless no other method of birth control is right for you or no other medication will work to treat your condition. Your doctor may test your bones to be sure they are not becoming too thin before you continue to use medroxyprogesterone injection.
Keep all appointments with your doctor and the laboratory. Your doctor will monitor your health carefully to be sure you do not develop osteoporosis.
Talk to your doctor about the risks of using medroxyprogesterone injection.
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🔔 Why is this medication prescribed?
Medroxyprogesterone intramuscular (into a muscle) injection and medroxyprogesterone subcutaneous (under the skin) injection are used to prevent pregnancy. Medroxyprogesterone subcutaneous injection is also used to treat endometriosis (a condition in which the type of tissue that lines the uterus (womb) grows in other areas of the body and causes pain, heavy or irregular menstruation [periods], and other symptoms). Medroxyprogesterone is in a class of medications called progestins. It works to prevent pregnancy by preventing ovulation (the release of eggs from the ovaries). Medroxyprogesterone also thins the lining of the uterus. This helps to prevent pregnancy in all women and slows the spread of tissue from the uterus to other parts of the body in women who have endometriosis. Medroxyprogesterone injection is a very effective method of birth control but does not prevent the spread of human immunodeficiency virus (HIV, the virus that causes acquired immunodeficiency syndrome [AIDS]) or other sexually transmitted diseases.
🔔 How should this medicine be used?
Medroxyprogesterone intramuscular injection comes as a suspension (liquid) to be injected into the buttocks or upper arm. It is usually given once every 3 months (13 weeks) by a healthcare provider in an office or clinic. Medroxyprogesterone subcutaneous injection comes as suspension to be injected just under the skin. It is usually injected once every 12 to 14 weeks by a healthcare provider in an office or clinic.
You must receive your first medroxyprogesterone subcutaneous or intramuscular injection only at a time when there is no possibility that you are pregnant. Therefore, you may only receive your first injection during the first 5 days of a normal menstrual period, during the first 5 days after you give birth if you are not planning to breast-feed your baby, or during the sixth week after giving birth if you are planning to breast-feed your baby. If you have been using a different method of birth control and are switching to medroxyprogesterone injection, your doctor will tell you when you should receive your first injection.
🔔 Other uses for this medicine
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
