norethindrone (Nor QD, Nora-BE, Ortho Micronor)

Norethindroneis a progestin that is used as an oralcontraceptive.

What brand names are available for norethindrone birth control pill?

Brand names for norethindrone oral contraceptive include:

• Camila
• Errin
• Heather
• Jencycla
• Nor QD
• Nora-BE
• Ortho Micronor
• Incassia

• Norethindrone is used for thepreventionofpregnancy.

Common side effects of norethindrone include:

• Menstrual irregularity
• Frequent and irregular bleeding
• Headache
• Breast tenderness
• Nausea
• Dizziness

Other possible side effects of norethindrone include:

• Long bleeding episodes
• Lack ofmenstruation
• Acne
• Hirsutism
• Weight gain
• Fatigue
• Edema
• Nervousness
• Painin extremity
• Genital discharge
• Breast pain
• Menstruation delayed
• Suppressed lactation
• Vaginal bleeding
• Heavy menstruation
• Withdrawal bleeding

Possible serious side effects of norethindrone include:

• Depression
• Seriousallergicreactions
• Hepatitis
• Jaundice
• Ovarian cyst
• Ectopic pregnancy

• The recommended dose is one tablet daily at the same time of the day.

A number of medications can decrease the blood levels of norethindrone by increasing its elimination in theliver. Examples of medications that increase the elimination ofestrogensinclude:

• carbamazepine(Tegretol)
• phenobarbital
• 苯妥英(Dilantin)
• rifampin (Rifadin)
• St. John's wort
• bosentan(Tracleer)

• Oral contraceptivesare generally avoided during pregnancy. Use of norethindrone during pregnancy has been associated with masculinization of female infants.
• Small amounts of progestin pass into breast milk and are detectable in the infant. Use ofbirth control pills哺乳期间一直与减少有关d milk production. Norethindrone may be used bybreastfeedingwomen.

What preparations of norethindrone birth control pill are available?

• Tablets: 0.35 mg

How should I keep norethindrone birth control pill stored?

• Norethindrone tablets should be stored at room temperature, 15 C to 30 C (59 F to 86 F).

How does norethindrone birth control pill work?

• Norethindrone is a progestin, and progestins prevent pregnancy by inhibitingovulation(release of the egg), making it more difficult for sperm to penetrate the uterinemucusthat surrounds the egg, and therefore, forfertilizationto take place. Progestins also change the uterine lining to prevent the fertilized egg from implanting in the uterus.

When was norethindrone birth control pill approved by the FDA?

• The FDA approved norethindrone in January, 1973.