Plan B One-Step
Medical Group: Sell the Pill Without Prescription »
"Nov. 20, 2012 -- Oral contraceptives should be made available without a prescription to reduce unintended pregnancies, according to a newly published opinion by the American College of Obstetricians and Gynecologists (ACOG).
Whether t"...
Read the Medical Group: Sell the Pill Without Prescription article »
Plan B One-Step
Plan B One-Step
(levonorgestrel) Tablet, 1.5 mg, for Oral Use
DRUG DESCRIPTION
The Plan B One-Step (levonorgestrel tablet) tablet contains 1.5 mg of a single active steroid ingredient, levonorgestrel [18,19-Dinorpregn-4-en-20-yn-3-one-13-ethyl-17-hydroxy-, (17 α)-(-)-], a totally synthetic progestogen. The inactive ingredients are colloidal silicon dioxide, corn starch, lactose monohydrate, magnesium stearate, potato starch, and talc.
Levonorgestrel has a molecular weight of 312.45, and the following structural and molecular formulas:
![]() |
What are the possible side effects of levonorgestrel emergency contraceptive (Next Choice, Plan B, Plan B One-Step)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have severe pain in your lower stomach or side. This could be a sign of a tubal pregnancy (a pregnancy that implants in the fallopian tube instead of the uterus). A tubal pregnancy is a medical emergency.
Less serious side effects may include:
- nausea, diarrhea, or stomach pain;
- dizziness, tired...
Read All Potential Side Effects and See Pictures of Plan B One-Step »
Last reviewed on RxList: 7/30/2009
This monograph has been modified to include the generic and brand name in many instances.
Additional Plan B One-Step Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Women's Health
Find out what women really need.







