Zantac and Parosmia - a phase IV clinical study of FDA data

Summary:

Parosmia is reported as a side effect among people who take Zantac (ranitidine hydrochloride), especially for people who are female, 50-59 old, have been taking the drug for < 1 month also take Lasix, and have Hypersensitivity.

The phase IV clinical study analyzes which people have Parosmia when taking Zantac. It is created by eHealthMe based on reports of 432,014 people who have side effects when taking Zantac from the FDA, and is updated regularly.

What is Zantac?

Zantac has active ingredients of ranitidine hydrochloride. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 434,161 Zantac users. Check the latest studies of Zantac.

What is Parosmia?

Parosmia (distortion of the sense of smell, as in smelling odours that are not present) is found to be associated with 703 drugs and 762 conditions by eHealthMe. Check the latest studies of Parosmia.

On Apr, 05, 2026

432,014 people reported to have side effects when taking Zantac.
Among them, 33 people (0.01%) have Parosmia.

Among these 33 people:

* Approximation only. Some reports may have incomplete information.

Do you take Zantac and have Parosmia?

- Check whether Parosmia 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 Zantac:

Zantac (434,161 reports)

Parosmia treatments and more:

Parosmia (8,965 reports)

How severe was Parosmia and when was it recovered:

Parosmia in Zantac

Expand to all the drugs that have ingredients of ranitidine hydrochloride:

Parosmia and drugs with ingredients of ranitidine hydrochloride (41 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 Zantac:

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 Parosmia:

Parosmia (703 drugs)

Browse all the conditions that are associated with Parosmia:

Parosmia (762 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on ranitidine hydrochloride (the active ingredients of Zantac) and Zantac (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.