Necon Warnings and Precautions

Specific Necon Warnings and Precautions

Some of the warnings and precautions to be aware of prior to using Necon include the following:
  • Combined oral contraceptives, including Necon, increase the risk of life-threatening problems, such as heart attacks, strokes, and blood clots. The risk is 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 Necon side effects. This risk is particularly high for smokers over the age of 35.
  • Necon 1/50 (but not the other forms of Necon) contains more estrogen than most birth control pills that are currently on the market. This high-estrogen dose may increase the risk of dangerous side effects, such as blood clots and strokes, as estrogen is responsible for these problems. You should only take Necon 1/50 if your healthcare provider thinks that it is the best choice for your situation. For instance, high-estrogen birth control pills may be useful for women who experience heavy menstrual bleeding or heavy bleeding between periods while on regular birth control pills.
  • When you take the drug correctly, your risk of pregnancy is quite low. However, if you take Necon incorrectly, your risk of pregnancy significantly increases. Make sure you understand exactly how to take Necon, including how and when to start it and what to do if you miss any pills.
  • Necon can interact with a number of different medications (see Necon Drug Interactions). Many of these interactions are severe enough to increase the risk of unintentional pregnancy.
  • The medication does not protect against HIV, AIDS, or other sexually transmitted diseases (STDs). In many cases, women are advised to use condoms in addition to Necon.
  • Combined oral contraceptives may slightly increase the risk of breast cancer or cervical cancer, although this is an unresolved and controversial 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.
  • Hormonal contraceptives can make gallbladder disease worse. Therefore, if you have had a problem with your gallbladder, Necon may not be the best contraceptive method for you.
  • Necon 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 Necon and other hormonal contraceptives).
  • Hormonal contraceptives, including Necon, can increase your blood pressure. This can be a problem if you already have high blood pressure.
  • Necon 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 Necon. 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.
  • The medication can affect your cholesterol. Your healthcare provider may need to check your cholesterol levels after you start Necon, especially if you already have high cholesterol.
  • Sometimes, hormonal contraceptives can make depression worse. Let your healthcare provider know if you develop new or worsening symptoms of depression while taking Necon.
  • Occasionally, Necon (as well as any other hormonal contraceptive) can cause eye changes that make it more difficult to wear contact lenses.
  • Necon is considered a pregnancy Category X medication. This means that it should not be used during pregnancy (see Necon and Pregnancy).
  • Contraceptive hormones, such as the ones in Necon, do pass through breast milk. Therefore, if you are breastfeeding or plan to start, discuss this with your healthcare provider prior to taking Necon (see Necon and Breastfeeding). Combined hormonal contraceptives are not usually recommended for women who are breastfeeding.
Last reviewed by: Kristi Monson, PharmD
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