Keflex and Throat irritation - a phase IV clinical study of FDA data

Summary:

Throat irritation is reported as a side effect among people who take Keflex (cephalexin), especially for people who are female, 50-59 old, have been taking the drug for < 1 month also take Dilaudid, and have Pain.

The phase IV clinical study analyzes which people have Throat irritation when taking Keflex. It is created by eHealthMe based on reports of 14,902 people who have side effects when taking Keflex from the FDA, and is updated regularly.

What is Keflex?

Keflex has active ingredients of cephalexin. It is often used in infection. eHealthMe is studying from 15,844 Keflex users. Check the latest studies of Keflex.

What is Throat irritation?

Throat irritation is found to be associated with 1,424 drugs and 1,503 conditions by eHealthMe. Check the latest studies of Throat irritation.

On Jul, 20, 2026

14,902 people reported to have side effects when taking Keflex.
Among them, 43 people (0.29%) have Throat irritation.

Among these 43 people:

How long have people been on Keflex when they have Throat irritation? *

What is the gender of people who have Throat irritation when taking Keflex? *

female: 76.19 %
male: 23.81 %

What is the age of people who have Throat irritation when taking Keflex? *

What are other drugs people take besides Keflex? *

What are other side effects people have besides Throat irritation? *

Cough: 20 people, 46.51%
Back Pain: 20 people, 46.51%
Headache (pain in head): 18 people, 41.86%
Dyspnea (difficult or laboured breathing): 17 people, 39.53%
Fever: 16 people, 37.21%
Hypoaesthesia (reduced sense of touch or sensation): 16 people, 37.21%
Pain: 15 people, 34.88%
Weakness: 15 people, 34.88%
Tooth Fracture: 14 people, 32.56%
Stress And Anxiety: 14 people, 32.56%

What are the existing conditions these people have? *

Pain: 16 people, 37.21%
Multiple Myeloma (cancer of the plasma cells): 8 people, 18.60%
Insomnia (sleeplessness): 7 people, 16.28%
Tremor (trembling or shaking movements in one or more parts of your body): 6 people, 13.95%
Neuralgia (pain in one or more nerves): 5 people, 11.63%
Acute Lymphocytic Leukemia (All) (cancer of the white blood cells characterized by excess lymphoblasts): 3 people, 6.98%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 2 people, 4.65%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 4.65%
Primary Pulmonary Hypertension (primary high blood pressure that affects the arteries in the lungs and the right side of your heart): 2 people, 4.65%
Breast Cancer Stage Iv: 1 person, 2.33%

* Approximation only. Some reports may have incomplete information.

Do you take Keflex and have Throat irritation?

- Check whether Throat irritation 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 Keflex:

Keflex (15,844 reports)

Browse all side effects of Keflex:

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 Throat irritation:

Throat irritation (1,424 drugs)

Browse all the conditions that are associated with Throat irritation:

Throat irritation (1,503 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 Keflex) and Keflex (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.