Each Plan B tablet contains 1.5 mg of levonorgestrel, an ingredient that
is also commonly found in birth control pills. When taken correctly
(within 72 hours of a contraceptive accident or unprotected sex) Plan B
works by:
- Temporarily stopping the release of an egg from the ovary (ovulation)
- Preventing fertilization
- Preventing a fertilized egg from attached to the uterus by changing the uterine lining
Recommended Dose:
Take one tablet as soon as possible, within 72 hours after a
contraceptive accident or unprotected sex. The sooner you start
treatment, the more effective it will be (preferably within 12 hours
after a contraceptive accident or unprotected sex). Do not take more
than directed.
Serious Warnings and Precautions: Plan
B provides no protection against HIV/AIDS and other sexually
transmitted diseases (STDs), such as syphilis, gonorrhoea, chlamydia,
and herpes. If you are worried about whether you may have been infected
with HIV/AIDS, or other sexually transmitted diseases, talk to your
health professional about your concerns and ask how you can protect
yourself in the future. If your period is delayed more than 1 week, you
should contact your doctor and have a pregnancy test done.
Be
sure to talk to a doctor or pharmacist before taking Plan B if you have
any of the following conditions: undiagnosed abnormal vaginal bleeding,
known or suspected breast cancer, active liver disease or tumour, high
blood pressure, diabetes, or if you are taking any prescription drugs,
if you are breastfeeding, or if you have a confirmed or suspected
pregnancy. Also make sure that you’re not allergic to levonorgestrel or
any of the non-medicinal ingredients contained in Plan B: colloidal
silicon dioxide, potato starch, magnesium stearate, talc, corn starch
and lactose monohydrate.
Severe reactions to Plan B are uncommon.
Temporary side effects, however, may occur and usually pass within 24
hours. The most common side effects include nausea, abdominal pain,
fatigue, headache, dizziness, breast tenderness, vomiting, diarrhea, and
irregular menstrual bleeding. Less common reactions are migraine or
severe headache, lower abdominal pain, painful menstruation, and vaginal
discharge. If your period is more than a week late or if these symptoms
continue for more than 48 hours or are severe, see a healthcare
professional. Be sure to contact a healthcare professional immediately
if you experience any of the following serious side effects: itching and
rash, cramping or severe pain in your stomach or belly before your next
normal period, uterine hemorrhage, vaginal hemorrhage. If you vomit
within two hours of taking Plan B, you may need to take another dose.
For any questions, you can call the Plan B medical information line at 1-888-867-7426 (Canadian residents only).
Should you require consultation with a pharmacist, you may
contact our Well.ca Pharmacist.
Please read the label, warnings and inserts provided by the
manufacturer and consult your healthcare professional when purchasing
medications or natural health products to be sure the product is right
for you.