Plan B One Step, which is commonly known as the morning after pill, is an emergency contraceptive medication. It reduces the chances of getting pregnant when taken within 72 hours after unprotected sexual intercourse. Plan B One Step prevents the passage of sperm into the uterus and may also prevent implantation of the egg. It does not work once the egg has implanted on the uterus and the woman becomes pregnant. Plan B One Step is available at the pharmacy counter for adults over the age of 17; patients 16 or younger require a prescription. This medication may cause several side effects.
Changes in Period and Breast Tenderness
Women who take Plan B One Step may experience changes in their menstrual cycles. The next period after taking the medication may be heavier or lighter and may be a week early or late. If the period is more than a week late, the patient may be pregnant and should seek the proper medical care. Breast tenderness may also occur in women who take Plan B One Step. This is due to the change in the levels of hormones that the drug causes.
Nausea and Vomiting
Nausea is a common side effect that may occur with the use of Plan B One Step. The “Drug Information Handbook” reports that about 23 percent of women experience nausea. Patients may also experience vomiting. The patient should eat a light meal to avoid these side effects. Since the patient is taking one tablet, the side effects will cease a few hours later. If nausea and vomiting persist, the patient should inform a physician.
Dizziness and Fatigue
Another common side effect seen in users of Plan B One Step is dizziness. Dizziness may occur in about 11 percent of patients. Fatigue may also be seen in individuals on this drug. The patient should avoid driving or other unsafe activities if she experiences these adverse effects. If these side effects become severe, the patient should seek medical attention.
Headache and Lower Abdominal Pain
Headache is a side effect that may be present in women on Plan B One Step. The patient may take a pain reliever, such as aspirin or Tylenol, for the headache. Lower abdominal pain may occur in patients, as well. This pain is similar to menstrual cramps. PlanBOneStep.com explains that if the patient experiences severe abdominal pain, she may have an ectopic pregnancy and should receive immediate medical care.
References
- "Drug Information Handbook"; Charles F. Lacy, Lora L. Armstrong, et al.; 2009
- PlanBOneStep.com: Frequently Asked Questions
