Levonorgestrel vs Norethindrone Acetate
Levonorgestrel is a pregnancy prevention medication.
Norethindrone Acetate is a female sex hormones - progestogen.
No score available
August 15, 1996
May 25, 2001
Number of discussions around the web Number of discussions + -
Side Effects and Concerns
Pregnancy Category (FDA) OpenClose all pregnancy categories
Adequate and well-controllted studies have failed to demonstrate a risk to the fetus in the first trimester of pregnancy (and there is no evidence of risk in later trimesters).
Animal reproduction studies have failed to demonstrate a risk to the fetus and there are no adequate and well-controlled studies in pregnant women.
Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
There is positive evidence of human fetal risk based on adverse reaction data from investigational or marketing experience or studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
Studies in animals or humans have demonstrated fetal abnormalities and/or there is positive evidence of human fetal risk based on adverse reaction data from investigational or marketing experience, and the risks involved in use of the drug in pregnant women clearly outweigh potential benefits.
FDA has not classified the drug.
Norethindrone Acetate is known to cause harm to fetus. Avoid during pregnancy.
There may be a negative interaction between Levonorgestrel and alcohol.
There may be a negative interaction between Norethindrone Acetate and alcohol.
Method of use
Implant, IUD, Pill
IUD: 14 mcg/24 hour (3 years), 18.6 mg/24 hour (3 years), 20 mcg/24 hr (5 years)
Tablet: 0.75 mg, 1.5 mg
Tablet: 5 mg
No Food Instructions
No Food Instructions
Interaction between Levonorgestrel and Norethindrone Acetate: Interaction not known, but may still exist. Always consult your doctor before taking these medications together. Do not stop taking the medications without a physician's advice.
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