Levonorgestrel is a drug sold under the brand name "Plan B" that is used as a preventive measure against pregnancy. The use of this medication can cause a variety of side effects differing in severity based on the individual and other circumstances.
Identifying Levonorgestrel
Levonorgestrel is a prescription drug often termed as a "morning after" birth control pill. It is attributed this term because it helps to prevent pregnancy after unprotected sex or other birth control failure. Considered a progestin, Levonorgestrel must be used within 72 hours of having sex. Although not fully understood, it is believed that Levonorgestrel works by preventing the ovulation of the egg.
Serious Side Effects
According to Drugs.com, the use of Levonorgestrel may lead to the following severe side effects: breast discharge, vision changes, yellowing of the skin, migraines, swelling of the extremities, unusual vaginal bleeding, severe headache or vomiting, lumps in the breasts, coughing blood, severe dizziness, missed menstrual period, severe lower stomach pain, leg pain, severe mood changes, chest pain and confusion. If you experience any of these serious side effects, seek immediate medical attention.
Common Side Effects
Levonorgestrel can cause a number of common side effects including tenderness of the breasts, mild dizziness and headache, nausea, vomiting, stomach pain, tiredness, diarrhea and unusual menstrual flow. Though common and less serious, if any of these side effects persist, contact your doctor immediately.
Use
Levonorgestrel should be taken as soon as possible after the unprotected sex. The first dose of the medication must be taken within the first 72 hours after sex. Drugs.com notes that the second tablet is usually taken 12 hours after the first dose. Although this is a common dose schedule, be sure to follow your prescription exactly as prescribed. Levonorgestrel may be taken at any period during the menstrual cycle.
Warning
Levonorgestrel does not work for individuals who have already become pregnant. This drug will not protect against HIV or other sexually transmitted diseases. According to Drugs.com, in rare cases, Levonorgestrel can cause a pregnancy in which the fertilized egg implants outside the uterus. Do not use in children.
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