"Nov. 26, 2012 -- Pediatricians should routinely talk to their teen patients about emergency birth control and write them prescriptions for “morning-after pills” so they can get them quickly if necessary, according to a new policy statement from t"...
An increased risk of the following serious adverse reactions has been associated with the use of oral contraceptives (see WARNINGS section).
- Thrombophlebitis and venous thrombosis with or without embolism
- Arterial thromboembolism
- Pulmonary embolism
- Myocardial infarction
- Cerebral hemorrhage
- Cerebral thrombosis
- Gallbladder disease
- Hepatic adenomas or benign liver tumors
The following adverse reactions have been reported in patients receiving oral contraceptives and are believed to be drug-related:
- Gastrointestinal symptoms (such as abdomi- nal cramps and bloating)
- Breakthrough bleeding
- Change in menstrual flow
- Temporary infertility after discontinuation of treatment
- Melasma which may persist
- Breast changes: tenderness, enlargement, secretion
- Change in weight (increase or decrease)
- Change in cervical erosion or secretion
- Diminution in lactation when given immediately postpartum
- Cholestatic jaundice
- Rash (allergic)
- Mental depression
- Reduced tolerance to carbohydrates
- Vaginal candidiasis
- Change in corneal curvature (steepening)
- Intolerance to contact lenses
The following adverse reactions have been reported in users of oral contraceptives and the association has been neither confirmed nor refuted:
- Pre-menstrual syndrome
- Changes in appetite
- Cystitis-like syndrome
- Loss of scalp hair
- Erythema multiforme
- Erythema nodosum
- Hemorrhagic eruption
- Impaired renal function
- Hemolytic uremic syndrome
- Changes in libido
- Budd-Chiari syndrome
Read the Necon (norethindrone and ethinyl estradiol tablets) Side Effects Center for a complete guide to possible side effects
Reduced efficacy and increased incidence of breakthrough bleeding and menstrual irregularities have been associated with concomitant use of rifampin. A similar association, though less marked, has been suggested with barbiturates, phenylbutazone, phenytoin sodium, carbamazepine, and possibly with griseofulvin, ampicillin, and tetracyclines (72).
Interactions With Laboratory Tests
- Increased prothrombin and factors VII, VIII, IX and X; decreased antithrombin 3; increased norepinephrine-induced platelet aggregability
- Increased thyroid binding globulin (TBG) leading to increased circulating total thyroid hormone, as measured by proteinbound iodine (PBI), T4 by column or by radioimmuno- assay. Free T3 resin uptake is decreased, reflecting the elevated TBG, free T4 concentration is unaltered.
- Other binding proteins may be elevated in the serum.
- Sex-binding globulins are increased and result in elevated levels of total circulating sex steroids and corticoids; however, free or biologically active levels remain unchanged.
- Triglycerides may be increased.
- Glucose tolerance may be decreased.
- Serum folate levels may be depressed by oral contraceptive therapy. This may be of clinical significance if a woman becomes pregnant shortly after discontinuing oral contraceptives.
Last reviewed on RxList: 3/24/2008
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