Progesterone is a type of hormone (progestin). This medication is similar to the progesterone that your body naturally makes and is given to replace the hormone when your body is not making enough of it. In women who are not pregnant and not going through menopause, this medication is used to restore normal menstrual periods that have stopped for several months (amenorrhea).

Progesterone is also used as part of combination hormone replacement therapy with estrogens to reduce menopause symptoms (such as hot flashes). Progesterone is added to estrogen replacement therapy to reduce the risk of cancer of the uterus.

This medication is not for use in children.

Progesterone must not be used to test for pregnancy.

This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.

This drug may also be used to maintain pregnancy.

Read the Patient Information Leaflet if available from your pharmacist before you start using this drug and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

Take this medication by mouth as directed by your doctor, usually once a day at bedtime. If you have trouble swallowing the pills, take with a full glass of water while standing up. Follow the dosing schedule carefully. Ask your doctor if you have any questions. The dosage is based on your medical condition and response to treatment.

Tell your doctor if your condition does not get better or if it gets worse.

See also Warning section.

Nausea, bloating, breast tenderness, headache, change in vaginal discharge, mood swings, blurred vision, dizziness, or drowsiness may occur. If any of these effects last or get worse, notify your doctor or pharmacist promptly.

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor right away if you have any serious side effects, including:

• nausea/vomiting that doesn't stop
• unusual vaginal bleeding (such as spotting, breakthrough bleeding)
• mental/mood changes (such as depression, memory loss)
• swelling of the hands/feet
• frequent/burning/painful urination
• breast lumps
• dark patches on the skin or face (melasma)
• yellowing eyes/skin
• stomach/abdominal pain
• dark urine
• unusual tiredness

This medication, especially if used along with an estrogen product, may rarely cause very serious (possibly fatal) problems from blood clots (such as heart attack, stroke, blood clots in the lungs, legs, or eyes). Get medical help right away if you have:

• chest/jaw/left arm pain
• weakness on one side of the body
• trouble speaking
• sudden vision changes
• confusion
• sudden/severe headaches
• sudden dizziness/fainting
• shortness of breath/rapid breathing
• pain/swelling/warmth in the groin/calf
• unusual sweating

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including:

• rash
• itching/swelling (especially of the face/tongue/throat)
• severe dizziness
• trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

See also Warning section.

Before taking progesterone, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients (such as peanut oil), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of:

• blood clots
• history of bleeding in the brain
• liver disease
• vaginal bleeding of unknown cause
• a loss of pregnancy with some tissue remaining in the uterus ("missed abortion")
• personal or family history of cancer (especially breast or other female organs)
• kidney disease
• obesity
• heart disease (such as past heart attacks, coronary artery disease, heart failure)
• high blood pressure
• seizures
• migraine headaches
• asthma
• high blood levels of cholesterol/fats
• depression
• diabetes
• strokes
• smoking
• lupus

This drug may make you dizzy or drowsy. Alcohol or marijuana (cannabis) can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

This medication may cause blotchy, dark areas on your face and skin (melasma). Sunlight may worsen this effect. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors.

This medication may be used during pregnancy only as directed by your doctor. Discuss the risks and benefits with your doctor.

This drug passes into breast milk. Consult your doctor before breastfeeding.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

This medication may interfere with certain lab tests, possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.

If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call 1-800-222-1222. Canada residents can call 1-844-764-7669. Symptoms of overdose may include severe nausea and vomiting.

Do not share this medication with others.

Regular complete physical exams which include lab and/or medical tests (such as blood pressure, breast exam/mammogram, pelvic exam, Pap smear) should be done while you are taking this medication. Follow your doctor's instructions for examining your breasts, and report any lumps right away. Keep all medical and lab appointments. Consult your doctor for more details.

If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.

Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.