Acetylsalicylic acid and Unintended pregnancy - a phase IV clinical study of FDA data


Unintended pregnancy is found among people who take Acetylsalicylic acid, especially for people who are female, 30-39 old.

The phase IV clinical study analyzes which people take Acetylsalicylic acid and have Unintended pregnancy. It is created by eHealthMe based on reports of 119,478 people who have side effects when taking Acetylsalicylic acid from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI algorithms, eHealthMe is running millions of phase IV trials and makes the results available to the public. Our original studies have been referenced on 600+ medical publications including The Lancet, Mayo Clinic Proceedings, and Nature.

On Dec, 08, 2022

119,478 people reported to have side effects when taking Acetylsalicylic acid.
Among them, 8 people (0.01%) have Unintended pregnancy.

What is Acetylsalicylic acid?

Acetylsalicylic acid has active ingredients of aspirin. It is often used in high blood pressure. eHealthMe is studying from 119,614 Acetylsalicylic acid users for its effectiveness, alternative drugs and more.

What is Unintended pregnancy?

Unintended pregnancy (unwanted pregnancies as well as those that are mistimed) is found to be associated with 691 drugs and 361 conditions by eHealthMe.

Number of Acetylsalicylic acid and Unintended pregnancy reports submitted per year:

Could Acetylsalicylic acid cause Unintended pregnancy?

Gender of people who have Unintended pregnancy when taking Acetylsalicylic acid *:

  • female: 100 %
  • male: 0.0 %

Age of people who have Unintended pregnancy when taking Acetylsalicylic acid *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 40 %
  • 30-39: 60 %
  • 40-49: 0.0 %
  • 50-59: 0.0 %
  • 60+: 0.0 %

Common drugs people take besides Acetylsalicylic acid *:

  1. Rebif: 2 people, 25.00%
  2. Lexapro: 2 people, 25.00%
  3. Ella: 2 people, 25.00%
  4. Depo-Provera: 2 people, 25.00%
  5. Baclofen: 2 people, 25.00%
  6. Symbicort: 1 person, 12.50%
  7. Stilnoct: 1 person, 12.50%
  8. Ramipril: 1 person, 12.50%
  9. Ortho Evra: 1 person, 12.50%
  10. Metoprolol Tartrate: 1 person, 12.50%

Common side effects people have besides Unintended pregnancy *:

  1. Drug Ineffective: 3 people, 37.50%
  2. Abortion Spontaneous (naturally occurring miscarriage): 3 people, 37.50%
  3. Amenorrhea (absence of a menstrual period in a woman of reproductive age): 2 people, 25.00%
  4. Drug Exposure During Pregnancy: 2 people, 25.00%
  5. Ultrasound Uterus Abnormal: 1 person, 12.50%
  6. Amniotic Fluid Volume Increased: 1 person, 12.50%
  7. Complications Of Maternal Exposure To Therapeutic Drugs: 1 person, 12.50%
  8. Dehydration (dryness resulting from the removal of water): 1 person, 12.50%
  9. Diverticulum Intestinal (a pouch that is attached to the first part of the small intestine): 1 person, 12.50%
  10. Haemorrhoids (a swollen vein or group of veins in the region of the anus): 1 person, 12.50%

Common conditions people have *:

  1. Birth Control: 3 people, 37.50%
  2. Muscle Spasms (muscle contraction): 2 people, 25.00%
  3. Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 2 people, 25.00%
  4. Depression: 2 people, 25.00%
  5. Bleeding Disorders: 2 people, 25.00%
  6. Relapsing-Remitting Multiple Sclerosis (reoccurrence of an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged): 1 person, 12.50%

* Approximation only. Some reports may have incomplete information.

Do you take Acetylsalicylic acid and have Unintended pregnancy?

Check whether Unintended pregnancy is associated with a drug or a condition

How to use the study?

You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.

Related publications that referenced our studies

Related studies

How severe was Unintended pregnancy and when was it recovered:

Expand to all the drugs that have ingredients of aspirin:

Alternative drugs to, pros and cons of Acetylsalicylic acid:

Common Acetylsalicylic acid side effects:

Browse all side effects of Acetylsalicylic acid:

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Unintended pregnancy treatments and more:

COVID vaccines that are related to Unintended pregnancy:

Common drugs associated with Unintended pregnancy:

All the drugs that are associated with Unintended pregnancy:

Common conditions associated with Unintended pregnancy:

All the conditions that are associated with Unintended pregnancy:

How the study uses the data?

The study uses data from the FDA. It is based on aspirin (the active ingredients of Acetylsalicylic acid) and Acetylsalicylic acid (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

Who is eHealthMe?

With medical big data and proven AI 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 600+ 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: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on 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.

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