Lipitor and Prothrombin time abnormal - a phase IV clinical study of FDA data

Summary:

Prothrombin time abnormal is reported as a side effect among people who take Lipitor (atorvastatin calcium), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Coumadin, and have Stroke.

The phase IV clinical study analyzes which people have Prothrombin time abnormal when taking Lipitor. It is created by eHealthMe based on reports of 251,142 people who have side effects when taking Lipitor from the FDA, and is updated regularly.

What is Lipitor?

Lipitor has active ingredients of atorvastatin calcium. It is often used in high blood cholesterol. eHealthMe is studying from 259,044 Lipitor users. Check the latest studies of Lipitor.

What is Prothrombin time abnormal?

Prothrombin time abnormal is found to be associated with 140 drugs and 299 conditions by eHealthMe. Check the latest studies of Prothrombin time abnormal.

On Apr, 12, 2026

251,142 people reported to have side effects when taking Lipitor.
Among them, 31 people (0.01%) have Prothrombin time abnormal.

Could Lipitor cause Prothrombin time abnormal?

Among these 31 people:

How long have people been on Lipitor when they have Prothrombin time abnormal? *

What is the gender of people who have Prothrombin time abnormal when taking Lipitor? *

female: 54.84 %
male: 45.16 %

What is the age of people who have Prothrombin time abnormal when taking Lipitor? *

What are other drugs people take besides Lipitor? *

What are other side effects people have besides Prothrombin time abnormal? *

Nausea (feeling of having an urge to vomit): 5 people, 16.13%
International Normalised Ratio Abnormal: 4 people, 12.90%
International Normalised Ratio Increased: 4 people, 12.90%
Head Injury: 4 people, 12.90%
International Normalised Ratio Decreased: 4 people, 12.90%
Weakness: 3 people, 9.68%
Malaise (a feeling of general discomfort or uneasiness): 3 people, 9.68%
Fatigue (feeling of tiredness): 3 people, 9.68%
Platelet Count Abnormal: 3 people, 9.68%
Cerebral Haemorrhage (bleeding within the brain): 2 people, 6.45%

What are the existing conditions these people have? *

Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 4 people, 12.90%
Thrombosis (formation of a blood clot inside a blood vessel): 2 people, 6.45%
Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 2 people, 6.45%
Deep Venous Thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis): 2 people, 6.45%
Multiple Myeloma (cancer of the plasma cells): 2 people, 6.45%
Hyperlipidaemia (presence of excess lipids in the blood): 1 person, 3.23%
Back Pain: 1 person, 3.23%
Bleeding Disorders: 1 person, 3.23%
Diabetes: 1 person, 3.23%
Herpes Zoster: 1 person, 3.23%

* Approximation only. Some reports may have incomplete information.

Do you take Lipitor and have Prothrombin time abnormal?

- Check whether Prothrombin time abnormal is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, long term effects of, and alternative drugs to Lipitor:

Lipitor (259,044 reports)

Browse all side effects of Lipitor:

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 the drugs that are associated with Prothrombin time abnormal:

Prothrombin time abnormal (140 drugs)

Browse all the conditions that are associated with Prothrombin time abnormal:

Prothrombin time abnormal (299 conditions)

Related publications that referenced our studies

Proti? D, Balti? S, Stupar N, Pavlov-Dolijanovi? S, Mugo?a S, Todorovi? Z, "A case of myositis with immunological background associated with statin use", Open Medicine, 2014 Oct .
Goldie MP, "Atorvastatin: a new treatment for periodontal disease?", , 2012 Jan .
Proti? D, Balti? S, Stupar N, Pavlov-Dolijanovi? S, Mugo?a S, Todorovi? Z, "A case of myositis with immunological background associated with statin use", Open Medicine, 2014 Oct .
Goldie MP, "Atorvastatin: a new treatment for periodontal disease?", , 2012 Jan .

How the study uses the data?

The study uses data from the FDA. It is based on atorvastatin calcium (the active ingredients of Lipitor) and Lipitor (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.

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.