1. Home
  2. Analysis
  3. Plan-b
  4. Amnesteem

Plan b and Amnesteem drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Plan b (levonorgestrel) and Amnesteem (isotretinoin). Common drug interactions include abortion induced among females.

The phase IV clinical study analyzes what interactions people have when they take Plan b and Amnesteem. It is created by eHealthMe based on reports of 15 people who take the same drugs from the FDA, and is updated regularly.

What is Plan b?

Plan b has active ingredients of levonorgestrel. It is often used in birth control. eHealthMe is studying from 38,623 Plan b users. Check the latest studies of Plan b.

What is Amnesteem?

Amnesteem has active ingredients of isotretinoin. It is often used in acne. eHealthMe is studying from 7,344 Amnesteem users. Check the latest studies of Amnesteem.

On Jul, 12, 2026

15 people who take Plan b and Amnesteem together, and have interactions are studied.

Plan b and Amnesteem drug interactions.

What are the common drug interactions of Plan B and Amnesteem, by gender? *:

female:

  1. Abortion induced (medically referred abortion)
  2. Drug exposure during pregnancy
  3. Colitis ulcerative (inflammation of colon with ulcer)
  4. Crohn's disease (a condition that causes inflammation of the gastrointestinal tract)
  5. Drug exposure before pregnancy
  6. Dry skin
  7. Inflammatory bowel disease
  8. Intestinal haemorrhage (bleeding from intestine)
  9. Intestinal obstruction
  10. Lip dry

male:

n/a

What are the common drug interactions of Plan B and Amnesteem, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

  1. Abortion induced (medically referred abortion)
  2. Sinusitis (inflammation of sinus)

20-29:

  1. Chapped lips (cracking, fissuring, and peeling of the skin f lip)
  2. Colitis ulcerative (inflammation of colon with ulcer)
  3. Crohn's disease (a condition that causes inflammation of the gastrointestinal tract)
  4. Dry skin
  5. Inflammatory bowel disease
  6. Intestinal haemorrhage (bleeding from intestine)
  7. Intestinal obstruction
  8. Lip dry
  9. Maternal exposure before pregnancy (use of substance before pregnancy)
  10. Menstruation irregular

30-39:

  1. Abortion induced (medically referred abortion)
  2. Abdominal pain

40-49:

  1. Vaginal haemorrhage (vaginal bleeding)
  2. Abortion spontaneous (naturally occurring miscarriage)
  3. Blighted ovum
  4. Maternal exposure before pregnancy (use of substance before pregnancy)
  5. Drug exposure before pregnancy

50-59:

n/a

60+:

n/a

* Approximation only. Some reports may have incomplete information.

Do you take Plan b and Amnesteem?

- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, side effects of, and alternative drugs to the 2 drugs:

Browse all drug interactions of Plan b and Amnesteem:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Plan b:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all side effects of Amnesteem:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all interactions between Plan b and drugs from A to Z:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all interactions between Amnesteem and drugs from A to Z:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Related publications that referenced our studies

How the study uses the data?

The study uses data from the FDA. It is based on levonorgestrel and isotretinoin (the active ingredients of Plan b and Amnesteem, respectively), and Plan b and Amnesteem (the brand names). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.

Recent studies on eHealthMe:

© 2026 eHealthMe.com. All rights reserved. Use of this site constitutes acceptance of eHealthMe.com's terms of service and privacy policy.