Depo-Provera Side Effects: What to Expect and When to Call Your Doctor

Depo-Provera (medroxyprogesterone acetate injection) is one of the most effective reversible contraceptives available, but it also comes with a distinctive side effect profile that patients should understand before starting. With a major new safety warning added in December 2025, there's more to discuss than ever before.

The Most Common Side Effect: Menstrual Irregularities

The most common side effect of Depo-Provera is changes to your menstrual cycle. According to the official prescribing information:

57% of women experience irregular bleeding or spotting at 12 months of use

32% still experience irregular bleeding at 24 months

Many patients eventually stop having periods altogether (amenorrhea) — which some consider a benefit, others a concern

Irregular bleeding is not a sign of pregnancy or a health problem — it's a normal result of the way DMPA suppresses the menstrual cycle. However, if you experience heavy, prolonged, or painful bleeding, talk to your provider.

Other Common Side Effects (Reported in >5% of Clinical Trial Participants)

Weight gain: 38% of women gained more than 10 pounds over 24 months of use. Average gain is about 5 pounds in the first year and 8 pounds over 2 years.

Headache: Reported in 17% of users in clinical trials.

Abdominal pain or discomfort: Reported in 11% of users.

Nervousness: Reported in 11% of users.

Decreased libido: Reported in 6% of users.

Dizziness: Reported in 6% of users.

Injection site reactions: Pain, swelling, or skin changes at the injection site are possible after each dose.

Serious Side Effect #1: Bone Mineral Density Loss (Black Box Warning)

Depo-Provera carries an FDA black box warning — the most serious type of warning — about bone mineral density (BMD) loss. The drug reduces estrogen levels, which accelerates bone loss. Key facts:

BMD loss increases with longer duration of use.

After stopping Depo-Provera, BMD begins to recover—but may not fully return to baseline in adolescents who used it for more than 2 years.

The FDA recommends using Depo-Provera for no longer than 2 years unless other options are inadequate.

Taking calcium and vitamin D and doing weight-bearing exercise may help reduce bone loss during use.

Serious Side Effect #2: Meningioma (New December 2025 Warning)

In December 2025, the FDA added a warning that long-term use of Depo-Provera (primarily more than 1 year) is associated with an increased risk of meningioma—a usually benign tumor that grows in the tissue surrounding the brain and spinal cord.

Studies show that women who used Depo-Provera for more than one year were approximately 5.5 times more likely to develop a meningioma requiring surgery compared to non-users. This risk appears to be higher with longer duration of use.

Meningioma symptoms to watch for:

Persistent or worsening headaches

Visual disturbances (blurred or double vision, vision loss)

Loss of smell

One-sided weakness or numbness

Cognitive changes or memory problems

If you experience any of these symptoms while using Depo-Provera, contact your healthcare provider immediately.

Other Serious Side Effects

Blood clots (DVT/PE): If you develop leg pain, swelling, chest pain, or shortness of breath, seek emergency care.

Severe allergic reactions (anaphylaxis): Though rare, can occur. Symptoms include hives, difficulty breathing, and rapid heartbeat. Seek emergency care.

Ectopic pregnancy: If you become pregnant while using Depo-Provera (rare), there's a higher chance it could be an ectopic (outside the uterus) pregnancy. Severe abdominal pain requires immediate evaluation.

Liver problems: Jaundice or signs of liver dysfunction require immediate medical attention.

When to Call Your Doctor

Contact your healthcare provider promptly if you experience:

New or worsening headaches, especially persistent ones

Any visual changes

Heavy or prolonged vaginal bleeding (soaking more than 1 pad per hour for several hours)

Severe abdominal or pelvic pain

Signs of a blood clot (leg swelling, chest pain, shortness of breath)

Yellowing of skin or eyes (jaundice)

For more about what affects how Depo-Provera works in your body, see our guide on Depo-Provera drug interactions. If you're having trouble getting your next injection, medfinder can help you find a pharmacy or clinic that has it in stock.