Common Side Effects of TriNessa
In clinical studies for most medications, one group of people is given the actual medication, while another group is given a placebo (a "sugar pill" with no active ingredients). The side effects in both groups are carefully documented and compared. This way, 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 possible to use a placebo in clinical trials for contraceptives, as this would lead to many unintentional pregnancies.
Since it is difficult to obtain much information about side effects from studies that do not use a placebo, because there is no way of knowing if any particular problem is actually a side effect of the medication, only vague information is available about
TriNessa side effects. In fact, the side effects listed in the prescribing information for TriNessa are actually side effects of all
birth control pills in general. 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
- Changes in your eyes that make it more difficult to wear contact lenses
- Bloating
- Breast tenderness or other breast changes, such as swelling
- Changes in sex drive (often a decrease, rather than an increase).
Women are often concerned about weight gain due to birth control pills, but recent research suggests that they probably do not cause weight gain for most women
(see Ortho Tri-Cyclen and Weight Gain).
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