Macrobid and Obesity - a phase IV clinical study of FDA data

Summary:

Obesity is reported as a side effect among people who take Macrobid (nitrofurantoin; nitrofurantoin, macrocrystalline), especially for people who are female, 60+ old, also take Levaquin, and have Multiple myeloma.

The phase IV clinical study analyzes which people have Obesity when taking Macrobid. It is created by eHealthMe based on reports of 8,335 people who have side effects when taking Macrobid from the FDA, and is updated regularly.

What is Macrobid?

Macrobid has active ingredients of nitrofurantoin; nitrofurantoin, macrocrystalline. It is often used in urinary tract infection. eHealthMe is studying from 9,215 Macrobid users. Check the latest studies of Macrobid.

What is Obesity?

Obesity (having too much body fat) is found to be associated with 2,019 drugs and 2,298 conditions by eHealthMe. Check the latest studies of Obesity.

On Jan, 16, 2026

8,335 people reported to have side effects when taking Macrobid.
Among them, 37 people (0.44%) have Obesity.

Among these 37 people:

What is the gender of people who have Obesity when taking Macrobid? *

female: 91.89 %
male: 8.11 %

What is the age of people who have Obesity when taking Macrobid? *

What are other drugs people take besides Macrobid? *

What are other side effects people have besides Obesity? *

Back Pain: 25 people, 67.57%
Dyspnea (difficult or laboured breathing): 25 people, 67.57%
Hyperlipidaemia (presence of excess lipids in the blood): 24 people, 64.86%
Depression: 24 people, 64.86%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 24 people, 64.86%
Pain: 23 people, 62.16%
Stress And Anxiety: 23 people, 62.16%
Sleep Apnea Syndrome: 22 people, 59.46%
Anhedonia (inability to experience pleasure from activities usually found enjoyable): 21 people, 56.76%
Weakness: 21 people, 56.76%

What are the existing conditions these people have? *

Multiple Myeloma (cancer of the plasma cells): 12 people, 32.43%
Arthritis (form of joint disorder that involves inflammation of one or more joints): 8 people, 21.62%
Depression: 8 people, 21.62%
Metastases To Bone (cancer spreads to bone): 6 people, 16.22%
Pain: 3 people, 8.11%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 3 people, 8.11%
Stress And Anxiety: 2 people, 5.41%
High Blood Cholesterol: 2 people, 5.41%
Seasonal Allergy (allergic condition due to certain season): 2 people, 5.41%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 5.41%

* Approximation only. Some reports may have incomplete information.

Do you take Macrobid and have Obesity?

- Check whether Obesity 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 Macrobid:

Macrobid (9,215 reports)

Obesity treatments and more:

Obesity (62,409 reports)

How severe was Obesity and when was it recovered:

Obesity in Macrobid

Expand to all the drugs that have ingredients of nitrofurantoin; nitrofurantoin, macrocrystalline:

Obesity and drugs with ingredients of nitrofurantoin; nitrofurantoin, macrocrystalline (60 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 Macrobid:

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 Obesity:

Obesity (2,019 drugs)

Browse all the conditions that are associated with Obesity:

Obesity (2,298 conditions)

Drugs similar to Macrobid and Obesity :

How the study uses the data?

The study uses data from the FDA. It is based on nitrofurantoin; nitrofurantoin, macrocrystalline (the active ingredients of Macrobid) and Macrobid (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.