Pepcid ac and Neck pain - a phase IV clinical study of FDA data

Summary:

Neck pain is reported as a side effect among people who take Pepcid ac (famotidine), especially for people who are female, 60+ old, have been taking the drug for 6 - 12 months also take Vitamin D3, and have Immunodeficiency common variable.

The phase IV clinical study analyzes which people have Neck pain when taking Pepcid ac. It is created by eHealthMe based on reports of 9,299 people who have side effects when taking Pepcid ac from the FDA, and is updated regularly.

What is Pepcid ac?

Pepcid ac has active ingredients of famotidine. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 9,573 Pepcid ac users. Check the latest studies of Pepcid ac.

What is Neck pain?

Neck pain is found to be associated with 2,081 drugs and 2,814 conditions by eHealthMe. Check the latest studies of Neck pain.

On Jul, 07, 2026

9,299 people reported to have side effects when taking Pepcid ac.
Among them, 27 people (0.29%) have Neck pain.

Among these 27 people:

How long have people been on Pepcid ac when they have Neck pain? *

What is the gender of people who have Neck pain when taking Pepcid ac? *

female: 85.19 %
male: 14.81 %

What is the age of people who have Neck pain when taking Pepcid ac? *

What are other drugs people take besides Pepcid ac? *

What are other side effects people have besides Neck pain? *

Headache (pain in head): 10 people, 37.04%
Joint Pain: 10 people, 37.04%
Rashes (redness): 8 people, 29.63%
Weakness: 7 people, 25.93%
Hypotension (abnormally low blood pressure): 6 people, 22.22%
Diarrhea: 6 people, 22.22%
Muscle Aches (muscle pain): 6 people, 22.22%
Joint Swelling: 6 people, 22.22%
Sinusitis (inflammation of sinus): 5 people, 18.52%
Photophobia (extreme sensitivity to light): 5 people, 18.52%

What are the existing conditions these people have? *

Immunodeficiency Common Variable: 3 people, 11.11%
High Blood Pressure: 2 people, 7.41%
Drowsiness: 2 people, 7.41%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 2 people, 7.41%
Pain: 2 people, 7.41%
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, 7.41%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 2 people, 7.41%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 7.41%
Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 2 people, 7.41%
Affective Disorder (mental disorder): 1 person, 3.70%

* Approximation only. Some reports may have incomplete information.

Do you take Pepcid ac and have Neck pain?

- Check whether Neck pain 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 Pepcid ac:

Pepcid ac (9,573 reports)

Neck pain treatments and more:

Neck pain (83,324 reports)

Browse all side effects of Pepcid ac:

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 Neck pain:

Neck pain (2,081 drugs)

Browse all the conditions that are associated with Neck pain:

Neck pain (2,814 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on famotidine (the active ingredients of Pepcid ac) and Pepcid ac (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.