Calcium citrate and Chills - a phase IV clinical study of FDA data

Summary:

Chills is reported as a side effect among people who take Calcium citrate (calcium), especially for people who are female, 60+ old, have been taking the drug for 10+ years also take Vitamin D3, and have Multiple sclerosis.

The phase IV clinical study analyzes which people have Chills when taking Calcium citrate. It is created by eHealthMe based on reports of 12,169 people who have side effects when taking Calcium citrate from the FDA, and is updated regularly.

What is Calcium citrate?

Calcium citrate has active ingredients of calcium. It is often used in osteopenia. eHealthMe is studying from 12,605 Calcium citrate users. Check the latest studies of Calcium citrate.

What is Chills?

Chills (felling of cold) is found to be associated with 2,578 drugs and 3,469 conditions by eHealthMe. Check the latest studies of Chills.

On Jun, 01, 2026

12,169 people reported to have side effects when taking Calcium citrate.
Among them, 143 people (1.18%) have Chills.

Among these 143 people:

* Approximation only. Some reports may have incomplete information.

Do you take Calcium citrate and have Chills?

- Check whether Chills 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 Calcium citrate:

Calcium citrate (12,605 reports)

Chills treatments and more:

Chills (145,628 reports)

How severe was Chills and when was it recovered:

Chills in Calcium citrate

Expand to all the drugs that have ingredients of calcium:

Chills and drugs with ingredients of calcium (2,479 reports)

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 Calcium citrate:

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 Chills:

Chills (2,578 drugs)

Browse all the conditions that are associated with Chills:

Chills (3,469 conditions)

How the study uses the data?

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