Some side effects with Zovia, while occurring infrequently, are potentially serious and should be reported to your healthcare provider. Zovia 1/50 (but not Zovia 1/35) contains a high dose of estrogen. As a result, it may have a higher risk of many of the serious side effects of birth control pills. These serious side effects include but are not limited to:
Signs of a blood clot in the leg, such as:
Pain in the calf
Leg cramps
Leg or foot swelling
Signs of a blood clot in the lung, such as:
Shortness of breath
Sharp chest pain
Coughing up blood
Sudden loss of vision or vision changes, which can be a sign of a blood clot in the eye
Heavy vaginal bleeding between periods (light bleeding or spotting is normal)