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Kelnor Warnings and Precautions

Specific Kelnor Warnings and Precautions

Some of the warnings and precautions to be aware of prior to using Kelnor include the following:
  • Kelnor can interact with a number of different medications. Some of these interactions may be severe enough to increase the risk of unintentional pregnancy (see Kelnor Drug Interactions).
  • Combined oral contraceptives (including Kelnor) can cause life-threatening conditions, such as heart attacks, strokes, and blood clots. This risk is quite minimal for healthy, young, nonsmoking women. However, tell your healthcare provider if you have ever had a blood clot, stroke, heart attack, or chest pain. Smoking cigarettes greatly increases the risk of these serious Kelnor side effects. This risk is particularly high for smokers over the age of 35.
  • Like all birth control pills, Kelnor does not protect against sexually transmitted diseases (STDs), including HIV or AIDS. As a result, it is often a good idea to use condoms in addition to the drug in order to prevent the transmission of STDs.
  • Kelnor is effective at preventing pregnancy when taken correctly. However, it becomes much less effective if taken incorrectly. Most cases of accidental pregnancy while taking Kelnor are due to incorrect usage. Make sure you understand exactly how to take the drug, including how and when to start it and what to do if you miss any pills.
  • Combined oral contraceptives may slightly increase the risk of breast cancer or cervical cancer, although this is an unresolved issue. However, combined oral contraceptives seem to help protect women against ovarian and uterine cancer.
  • Oral contraceptives increase the risk of benign (noncancerous) liver tumors. In rare cases, these tumors can rupture and cause serious problems.
  • Sometimes, hormonal contraceptives can make depression worse. Let your healthcare provider know if you develop new or worsening symptoms of depression while taking Kelnor.
  • Occasionally, Kelnor (as well as any other hormonal contraceptive) can cause eye changes that make it more difficult to wear contact lenses.
  • Hormonal contraceptives can make gallbladder disease worse. Therefore, if you have had a problem with your gallbladder, Kelnor may not be the best contraceptive method for you.
  • Kelnor may increase blood sugar levels, particularly in women with diabetes. Your healthcare provider may need to monitor you more closely in this case. Let your healthcare provider know if you have any sudden vision changes, as this may be a sign of a blood clot in the eyes (a possible side effect of Kelnor and other hormonal contraceptives).
  • Hormonal contraceptives, including Kelnor, can increase your blood pressure. This can be a problem if you already have high blood pressure.
  • The medication can change your menstrual bleeding patterns. Some women have breakthrough bleeding (bleeding between periods), while others may not have a period at all. It is normal to have shorter and lighter periods while using Kelnor. However, if you notice any unusual changes in your bleeding patterns, let your healthcare provider know. If you miss a period, you should make sure you are not pregnant.
  • Kelnor can affect your cholesterol. Your healthcare provider may need to check your cholesterol levels after you start the drug, especially if you already have high cholesterol.
  • Kelnor is considered a pregnancy Category X medication. This means that it should not be used during pregnancy (see Kelnor and Pregnancy).
  • Contraceptive hormones, such as the ones in Kelnor, do pass through breast milk. Therefore, if you are breastfeeding or plan to start, discuss this with your healthcare provider prior to taking the drug (see Kelnor and Breastfeeding). Combined hormonal contraceptives are not usually recommended for women who are breastfeeding.
Last reviewed by: Kristi Monson, PharmD
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