Depo-Provera Side Effects

You may face increased health risks if you take Depo-Provera for more than two years. These risks can include bone loss, osteoporosis, fractures, delayed return of fertility and a higher chance of noncancerous brain tumors called meningiomas.

The U.S. Food and Drug Administration label includes a boxed warning. It advises that Depo-Provera not be used longer than two years unless other options are not right for you.

For this reason, experts recommend re‑evaluating this birth control method before or around the two‑year mark.

Many people can take Depo-Provera for years without developing serious complications. However, you should always check in with your doctor if you have any side effects.

Is Bone Loss From Long-Term Depo-Provera Use Reversible?

Some research suggests that bone loss may be partly or mostly reversible once you stop taking Depo. There is concern that long-term users could still face a higher fracture risk later in life.

The main concern with long-term Depo-Provera use is bone mineral density loss, which can weaken your bones over time. Studies show that the longer you stay on the shot, the more bone you may lose, and you may not fully regain that bone after you stop.

Because of this, the FDA warning says Depo-Provera should not generally be used for more than two years. It may also increase the risk of osteoporosis, a disease that makes bones thinner and easier to break.

With each year of Depo-Provera use, your bone mineral density may drop further, especially in the hip and spine. Younger users whose bones are still developing may face greater long-term impacts, so providers often closely monitor teens and young adults while they’re on Depo.

How Does Long-Term Depo-Provera Affect Fertility and Periods?

Long-term Depo-Provera use generally does not cause permanent infertility, but it can delay your ability to get pregnant. On average, it may take around 10 months or longer from your last shot before your periods and ovulation return. For some women, it can take more than a year.

If you have used Depo-Provera for several years, you may also notice that your cycle takes longer to become regular again. Some women continue to have irregular bleeding or no periods for months after their final shot while the hormone slowly leaves the body.

Should You Stay on Depo-Provera Longer Than 2 Years?

Most guidelines say you should only continue Depo-Provera beyond two years if other birth control methods are not right for you and if you understand the long‑term risks. You can ask your provider how to protect your bones while you are on the shot. These include bone density testing, taking calcium and vitamin D, regular exercise and avoiding smoking.

You can also talk with your doctor about switching to another method if you are worried about bone loss, meningioma risk or trouble getting pregnant later. Other birth control options include an IUD, implant, pill, patch or ring.

If you have already taken Depo-Provera for more than two years and have new symptoms such as severe headaches, vision changes, seizures, strong mood changes or bone pain, you should seek medical care right away.

As of May 2026, neoplasms — also known as tumors — were the most reported Depo-Provera side effect in the FDA’s database. We conducted a search of the FDA Adverse Events Reporting System for the terms “Depo-Provera,” “medroxyprogesterone acetate,” “Depo-SubQ Provera” and “medroxyprogesterone acetate injectable suspension” to gather the following data.

This data is current as of May 2026. People reported 31,707 neoplasms — benign, malignant and unspecified. The second most-reported adverse events were general disorders and administrative site conditions.

The most common Depo-Provera side effects are irregular bleeding, weight gain, headache and abdominal discomfort. These side effects impacted more than 5% of users in clinical trials, and most occurred during the first few months of use.

Pfizer used trial data from two clinical trials with over 3,000 women treated for up to seven years.

According to clinical trial data on the prescribing label, “The median study duration was 13 months with a range of 1-84 months. Fifty-eight percent of patients remained in the study after 13 months and 34% after 24 months.”

Some of these side effects led people to discontinue the trial, including bleeding, amenorrhea and weight gain.

Serious Depo-Provera side effects include significant bone mineral density loss, meningioma brain tumor risk, increased breast cancer risk and blood clots. These are rarer than common side effects but can have long-term consequences. The prescription label has a black box warning, the FDA’s strongest warning, for loss of bone mineral density.

If you are concerned about any of these side effects, make sure to discuss your risk with your medical provider.

Bone Mineral Density Loss

Because Depo-Provera reduces estrogen levels, the drug is associated with a significant loss of bone mineral density. This side effect is more concerning for adolescents and young adults because bone is still forming at this age. Bones could be more susceptible to fracture.

In study results detailed on the drug’s prescribing information, women who used Depo-Provera for more than two years and stopped using it still had not fully recovered bone loss after five years. The bones most affected were the hip, femoral neck and lumbar spine.

Blood Clots and Cardiovascular Risks

Some Depo-Provera users have reported blood clots, though the FDA label states that the drug has not been proven to cause thrombotic disorders. The label recommends stopping treatment immediately if a blood clot or stroke occurs.

If you experience partial or complete vision loss, sudden migraines, proptosis (bulging of the eyes) or diplopia (double vision), stop using the drug until you are examined by a medical professional.

Breast Cancer Risk

Research suggests a slight increase in breast cancer risk among Depo-Provera users. The association is more pronounced in women who used the drug for 12 months or longer, but more research is needed to understand the potential link. There has been no definitive science that says Depo-Provera directly causes cancer.

Depo-Provera and Brain Tumors

Depo-Provera has been linked to a higher risk of meningioma, a type of tumor in the lining of the brain, in a 2024 BMJ study. The research found a 5.6-fold increase in risk with long-term use. This risk increase was more than any other birth control method studied.

In December 2025, the FDA approved a new Depo-Provera label that included a warning of a potential meningioma risk. The new label encourages health care providers to monitor patients using Depo for signs of meningioma.

“Meningiomas grow out of the middle layer of the meninges called the arachnoid. They grow slowly and may exist for years before being detected. Sometimes doctors will discover meningioma incidentally on a magnetic resonance imaging (MRI) scan of the head or spinal cord,” according to Drugwatch expert and oncology clinical pharmacy specialist, Dazhi Liu.

These types of tumors are not typically cancerous, but the mass can grow and affect surrounding brain tissue and impinge on nerves or blood vessels, causing serious issues. When this happens, doctors may perform brain surgery.

Meningioma symptoms can include persistent headaches, vision changes, hearing loss and weakness in the arms or legs. Anyone experiencing these symptoms while using Depo-Provera should seek evaluation from a physician.

Lawyers are currently investigating Depo-Provera lawsuits on behalf of women who developed meningioma after using the brand-name or generic form of the drug.

Depo-Provera side effects typically last two to three months as the body adjusts to hormone changes. After stopping the shot, most side effects resolve within a few months, though bone density recovery can take significantly longer. Women who used Depo for more than two years may not fully recover bone mass for five or more years.

Everyone is different, and mild side effects may go away quicker or linger longer. If any side effects are bothersome or uncomfortable, make sure to seek advice from a medical professional.