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Side Effects of Leena

Common Side Effects of Leena

Some of the common, bothersome (but not usually dangerous) side effects of birth control pills include:
  • Headaches (although birth control pills can improve headaches in some women)
  • Breakthrough bleeding and spotting between periods (especially for the first few cycles)
  • Nausea and vomiting
  • Bloating
  • Breast tenderness or other breast changes (such as swelling)
  • Changes in your eyes that make it more difficult to wear contact lenses
  • Changes in sex drive (typically a decrease).

Birth Control and Clinical Trials

In the United States, medications must be shown to be safe and effective in clinical studies before they are approved. In clinical studies for most medications, one group of people receives the actual medication, while another group is given a placebo (a "sugar pill" that does not contain any active ingredients). Typically, the people in the studies do not know if they are taking the real medication or the placebo.
The side effects in both groups are carefully documented and statistically analyzed. As a result, it is possible to see what side effects occur, how often they appear, and whether they are actual side effects of the medication. However, it is not usually ethical to use a placebo in clinical trials for contraceptives, as this would lead to many unintentional pregnancies.

Final Thoughts on Side Effects of Leena

It is possible that you may experience some or none of the Leena side effects listed in this article. Unfortunately, it can be difficult to tell whether any particular side effect (such as nausea) is caused by Leena or other factors. Therefore, make sure to let your healthcare provider know if you develop any side effects while taking Leena, or if something "just does not seem right." While it may not be a side effect of the contraceptive, your healthcare provider will be able to diagnose and treat the problem.
Last reviewed by: Kristi Monson, PharmD
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