Cephalexin and Neck mass - a phase IV clinical study of FDA data

Summary:

Neck mass is reported as a side effect among people who take Cephalexin (cephalexin), especially for people who are male, 40-49 old, have been taking the drug for 1 - 6 months also take Zometa, and have Multiple myeloma.

The phase IV clinical study analyzes which people have Neck mass when taking Cephalexin. It is created by eHealthMe based on reports of 29,149 people who have side effects when taking Cephalexin from the FDA, and is updated regularly.

What is Cephalexin?

Cephalexin has active ingredients of cephalexin. It is often used in infection. eHealthMe is studying from 30,581 Cephalexin users. Check the latest studies of Cephalexin.

What is Neck mass?

Neck mass (mass in neck) is found to be associated with 473 drugs and 487 conditions by eHealthMe. Check the latest studies of Neck mass.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 31, 2026

29,149 people reported to have side effects when taking Cephalexin.
Among them, 24 people (0.08%) have Neck mass.

Among these 24 people:

How long have people been on Cephalexin when they have Neck mass? *

What is the gender of people who have Neck mass when taking Cephalexin? *

female: 40.91 %
male: 59.09 %

What is the age of people who have Neck mass when taking Cephalexin? *

What are other drugs people take besides Cephalexin? *

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

Pain: 17 people, 70.83%
Stress And Anxiety: 16 people, 66.67%
Osteomyelitis (infection of bone): 16 people, 66.67%
Nausea And Vomiting: 14 people, 58.33%
Headache (pain in head): 13 people, 54.17%
Fibromyalgia (a long-term condition which causes pain all over the body): 13 people, 54.17%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 12 people, 50.00%
Swelling: 12 people, 50.00%
Deformity (disfigurement): 12 people, 50.00%
Osteoarthritis (a joint disease caused by cartilage loss in a joint): 12 people, 50.00%

What are the existing conditions these people have? *

Pain: 3 people, 12.50%
Multiple Myeloma (cancer of the plasma cells): 3 people, 12.50%
Primary Myelofibrosis (primary disorder of the bone marrow): 2 people, 8.33%
Systemic Lupus Erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue): 1 person, 4.17%
Glaucoma (increased fluid pressure in the eye with vision loss): 1 person, 4.17%
Anaemia (lack of blood): 1 person, 4.17%
Asthma: 1 person, 4.17%
Bone Density Abnormal: 1 person, 4.17%
Breast Cancer Stage Iv: 1 person, 4.17%
Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 1 person, 4.17%

* Approximation only. Some reports may have incomplete information.

Do you take Cephalexin and have Neck mass?

- Check whether Neck mass 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 Cephalexin:

Cephalexin (30,581 reports)

Neck mass treatments and more:

Neck mass (3,708 reports)

Browse all side effects of Cephalexin:

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 mass:

Neck mass (473 drugs)

Browse all the conditions that are associated with Neck mass:

Neck mass (487 conditions)

Related publications that referenced our studies

Agrawal A, Rao M, Jasdanwala S, Mathur A, Eng M, "Cephalexin Induced Cholestatic Jaundice", Case reports in gastrointestinal medicine, 2014 Aug .
Agrawal A, Rao M, Jasdanwala S, Mathur A, Eng M, "Cephalexin Induced Cholestatic Jaundice", Case reports in gastrointestinal medicine, 2014 Aug .

How the study uses the data?

The study uses data from the FDA. It is based on cephalexin (the active ingredients of Cephalexin) and Cephalexin (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.