Provera is a synthetic form of progesterone taken as an oral tablet, most commonly prescribed to restart a missed period (amenorrhea) or to treat abnormal uterine bleeding caused by a hormonal imbalance. It is typically taken once daily for 5 to 10 days, depending on the condition being treated. How you take it, when you take it, and what to expect afterward all depend on why it was prescribed.
How Provera Works
Your body naturally produces progesterone during the second half of the menstrual cycle. This hormone builds up the uterine lining, and when progesterone levels drop, the lining sheds as a period. Provera mimics that process. You take it for a set number of days to build up the lining, and after you stop, the drop in progesterone triggers a withdrawal bleed that functions like a period.
This is why Provera is taken in short courses rather than continuously for most uses. The goal is to create that rise-and-fall pattern your body isn’t producing on its own.
Standard Dosing by Condition
The dose and duration vary based on the reason for your prescription. For secondary amenorrhea (a period that has stopped for reasons other than pregnancy or menopause), the typical course is 5 to 10 mg taken once daily for 5 to 10 days. For abnormal uterine bleeding due to hormonal imbalance, the usual dose is 5 to 10 mg daily for 5 to 10 days, often started on a specific day of your cycle as directed by your prescriber.
When Provera is used alongside estrogen therapy in postmenopausal women to protect the uterine lining, it is generally taken for 12 to 14 consecutive days per month. This cyclical approach triggers a predictable monthly withdrawal bleed and prevents the uterine lining from building up too much.
When and How to Take Each Dose
Provera tablets can be taken with or without food. Taking them with a small meal or snack may help if the medication causes mild nausea. The FDA label does not specify that food significantly changes how the drug is absorbed, so the choice comes down to comfort.
Try to take your tablet at the same time each day. Consistency helps maintain steady hormone levels throughout your course. Whether you choose morning or evening does not matter, but picking one time and sticking with it makes it easier to remember.
What to Do if You Miss a Dose
If you forget a dose, take it as soon as you remember. If it is nearly time for your next scheduled dose, skip the one you missed and continue with your regular schedule. Do not take two tablets at once to make up for a missed dose. Doubling up will not improve the medication’s effectiveness and may increase side effects.
What to Expect After Your Last Tablet
Withdrawal bleeding typically starts 3 to 7 days after you take your final Provera tablet. This bleeding resembles a normal period and usually lasts several days. It confirms that your uterine lining responded to the progesterone, which is a reassuring sign that your body had adequate estrogen levels to build the lining in the first place.
If bleeding does not occur within 7 to 10 days of finishing the course, let your prescriber know. The absence of withdrawal bleeding can indicate very low estrogen levels or another underlying issue that needs investigation. This does not necessarily mean anything serious, but it changes the next diagnostic step.
Common Side Effects
Most side effects of short-course Provera are mild and temporary. The ones reported most frequently include headaches, breast tenderness, bloating, mood changes, and spotting or irregular bleeding during the course itself. Some women notice drowsiness, mild nausea, or changes in appetite. These effects typically resolve once the medication is stopped and withdrawal bleeding begins.
Weight fluctuation can occur, though it tends to be minor with short courses. Fluid retention is the more common culprit rather than true weight gain.
Who Should Not Take Provera
Provera is not safe for everyone. The FDA label lists several conditions that rule out its use:
- Known or suspected pregnancy: Provera is not a diagnostic test for pregnancy and should not be taken if you might be pregnant.
- History of breast cancer or any hormone-sensitive cancer.
- Active or past blood clots, including deep vein thrombosis or pulmonary embolism.
- Recent stroke or heart attack (within the past year) or a history of these events.
- Liver disease or known liver dysfunction.
- Undiagnosed abnormal vaginal bleeding, because taking Provera before finding the cause could mask a more serious condition.
If you have a personal or strong family history of blood clots, be sure your prescriber is aware before starting treatment.
Risks With Long-Term or Combined Use
The most significant safety warnings apply when Provera is taken continuously alongside estrogen, particularly in postmenopausal women. The Women’s Health Initiative study found that the combination of estrogen plus Provera roughly doubled the rate of blood clots compared to placebo (35 versus 17 cases per 10,000 women per year) and modestly increased stroke risk (33 versus 25 cases per 10,000 women per year). The same study showed a small but real increase in invasive breast cancer: 41 cases per 10,000 women per year on the combination, compared to 33 on placebo.
These findings led to a boxed warning on the Provera label, the FDA’s most serious safety alert. The risks are specific to long-term, daily use of estrogen plus progestin in older postmenopausal women. A short 5- to 10-day course prescribed to trigger a period carries a far lower risk profile, though women with a history of clotting disorders should still exercise caution.
Tips for Getting the Most From Your Course
Set a daily alarm or pair your dose with an existing habit, like brushing your teeth, to avoid missing tablets. Keep the medication at room temperature and away from moisture. If you experience significant nausea, try taking the tablet at bedtime so you sleep through the worst of it.
Mark the day you take your last tablet on a calendar so you can track when withdrawal bleeding starts. This information is useful for your prescriber and gives you a clear timeline for when to follow up if bleeding doesn’t occur within the expected 3 to 7 day window.