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Doctor insights on: What Are Common Side Effects Of The Plan B Emergency Contraceptive

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Dr. Heidi Fowler
591 doctors shared insights

Emergency Contraception (Definition)

Emergency contraception is the method a woman can use to avoid getting pregnant, after she has received sperm in her vagina. She takes the hormone pills, which are usually larger doses of hormones used in oral birth control pills, within a short time (days) after her sexual activity, ...Read more


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If you are using the Plan B emergency contraceptive, when should you take the two pills?

If you are using the Plan B emergency contraceptive, when should you take the two pills?

Within 72 hours: You must use ir within 72 hours of the episode of unprotected intercourse. Even then it is only 75% effective so you must take a pregnancy test if you are late with your period. ...Read more

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Is the Plan B emergency contraceptive the same as the ru-486 pill?

Is the Plan B emergency contraceptive the same as the ru-486 pill?

No: Plan b is actually a version of birth control pills, taken at high dose, intended to thicken the uterine lining and prevent a fertilized egg from implanting. Ru-486 is a progesterone-blocker that causes a pregnancy, already implanted in the uterine lining, to separate and abort from the uterus. ...Read more

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What is the difference between the Plan B emergency contraceptive and regular birth control pills?

What is the difference between the Plan B emergency contraceptive and regular birth control pills?

Mechanisms differ: Plan b is levonorgestrel. It alters the tubes to prevent passage of the eggs and sperm and prevent fertilization. It also alters the endometrium to prevent implantation. Birth control pills usually contain an estrogen and a progesterone. They suppress LH and FSH to prevent ovulation. They also alter the cervical mucous to prevent sperm from entering. ...Read more

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Will the Plan B emergency contraceptive interfere with Risperdone, Trazodone, Hydroxyzine, and Wellbutrin (bupropion) XL?

Nope: Some of those medications can interact with each other ... But Plan B will not interact with any of the current medications you're taking. Hope that helps! ...Read more

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I'm tall, fit and weigh right around 175 lbs. Will Plan B emergency contraceptive work for me?

Yes - but not 100%: effective. Plan B One-Step is up to 89 % effective when taken within 72 hours (3 days) after unprotected sex. It can reduce chance of pregnancy by up to 95% if used within 24 hours. It continues to reduce the risk of pregnancy up to 120 hours (5 days) after unprotected sex, but is less effective as time passes. ...Read more

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If a woman is on antibiotics, could that impair the efficacy of Plan B emergency contraceptive? Thank you.

If a woman is on antibiotics, could that impair the efficacy of Plan B emergency contraceptive?  Thank you.

Depends: It depends on the antibiotic. It would be prudent to check with your pharmacist and address the specific antibiotic of concern. For general information on this topic you may consult this site. http://www.webmd.com/drugs/2/drug-17838-7300/plan-b-oral/levonorgestrel-oral/details/list-interaction-medication If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. ...Read more

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Would a male buy Plan B emergency contraceptive at the pharmacy counter or can only females buy it?

Would a male buy Plan B emergency contraceptive at the pharmacy counter or can only females buy it?

Well...: Our pharmacists indicate that they would likely only provide it to a male who was a guardian, parent, spouse or for the female who required it. Since writing this - i read a quite a few articles about Plan B one step. The most up to date was from 7 may 2013. It indicated: 'it is now available over-the-counter, for those 15 and older (you must show a valid, proof-of-age id). It is also available. ...Read more

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When you take plan b, (emergency contraceptive), are you supposed to get your period on schedule?

When you take plan b, (emergency contraceptive), are you supposed to get your period on schedule?

Plan B: Well, if you don't get your period within a week of anticipated date you should notify your gynecologist as it would be important to ensure that you are not pregnant. ...Read more

Dr. Milton Alvis Jr
4 doctors shared insights

Birth Control (Definition)

Also known as contraception, birth control is a method to prevent pregnancy. Some methods of birth control include a vasectomy, tubal ligation, oral contraceptive pills, vaginal rings, hormone injections, condoms, diaphragms, sponges, ...Read more


Dr. Peter Baumann
875 doctors shared insights

Levonorgestrel (Definition)

Levonorgestrel is a progestin commonly used in oral contraceptives and the Mirena (levonorgestrel) iud. It has ...Read more