Drospirenone/Ethinyl Estradiol Side Effects: What to Expect and When to Call Your Doctor

Like all combination oral contraceptives, drospirenone/ethinyl estradiol (sold as Yaz, Yasmin, Loryna, Ocella, and others) comes with a range of potential side effects. Most people tolerate it well, especially after the first 1-3 months. But some side effects require prompt medical attention.

This guide covers both common side effects (usually mild and temporary) and serious side effects (rare, but important to recognize immediately).

Boxed Warning: What the FDA Requires You to Know

Drospirenone/ethinyl estradiol carries an FDA boxed warning — the most serious type of drug warning — about cardiovascular risks:

Smoking: Cigarette smoking significantly increases the risk of serious cardiovascular events (blood clots, stroke, heart attack) with combination oral contraceptives. This risk increases with age. Women who smoke and are over 35 should NOT take this medication.

Common Side Effects (Usually Mild and Temporary)

These side effects are frequently reported and typically improve within 2-3 months as your body adjusts:

Nausea: Most common in the first few weeks. Taking the pill with food or at bedtime can help.

Headache: Often hormone-related and may improve over time. Notify your doctor if headaches are new, severe, or persistent.

Breast tenderness: Common in the first month. Usually resolves.

Breakthrough bleeding or spotting: Common in the first 3 months, especially after starting or switching brands. Contact your provider if heavy bleeding continues.

Weight changes: Some patients report mild weight gain, often from water retention. The antimineralocorticoid properties of drospirenone can actually help reduce bloating for some patients.

Mood changes or decreased libido: Reported by some users. If mood changes are significant, discuss with your doctor.

Contact lens discomfort: Hormonal changes can affect corneal curvature and contact lens tolerance.

Serious Side Effects: Call Your Doctor or Go to the ER

These side effects are rare but serious. Seek immediate medical attention if you experience:

Signs of blood clot (DVT/PE): Sudden leg pain, swelling, warmth, or redness; chest pain; sudden shortness of breath; coughing blood

Signs of stroke: Sudden severe headache, facial drooping, arm weakness, speech difficulty, vision changes or loss on one side

Signs of heart attack: Chest pain or pressure, sweating, nausea, left arm pain, dizziness

Signs of high potassium (hyperkalemia): Muscle weakness, irregular heartbeat, tingling or numbness (especially in patients on ACE inhibitors, ARBs, or potassium-sparing diuretics)

Liver problems: Yellowing of skin or eyes (jaundice), upper right abdominal pain, dark urine, severe fatigue

Severe allergic reaction: Rash, hives, swelling of face/throat, difficulty breathing

A Note on Blood Clot Risk with Drospirenone

Research suggests that birth control pills containing drospirenone may carry a slightly higher risk of venous thromboembolism (VTE — blood clots in veins) compared to pills containing levonorgestrel. The absolute risk remains low for healthy, non-smoking women who don't have other VTE risk factors. However, this is an important consideration for women with clotting disorders, obesity, prolonged immobility, or a personal or family history of blood clots.

What to Do If You Experience Side Effects

Mild nausea, spotting, and breast tenderness in the first 1-3 months: continue taking the pill and contact your provider only if these worsen or persist beyond 3 months

Mood changes, persistent headaches, or significant weight gain: contact your doctor for an evaluation — you may benefit from switching formulations

Any symptoms of blood clot, stroke, or heart attack: stop the medication and call 911 or go to the ER immediately

Also see: Drospirenone/Ethinyl Estradiol Drug Interactions: What to Avoid and What to Tell Your Doctor.

Considering alternatives? See: Alternatives to Drospirenone/Ethinyl Estradiol.