Cimetidine and Keflex drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Cimetidine (cimetidine) and Keflex (cephalexin). Common drug interactions include dysphagia among females and chronic kidney disease among males.

The phase IV clinical study analyzes what interactions people have when they take Cimetidine and Keflex. It is created by eHealthMe based on reports of 83 people who take the same drugs from the FDA, and is updated regularly.

What is Cimetidine?

Cimetidine has active ingredients of cimetidine. It is often used in gastroesophageal reflux disease. eHealthMe is studying from 10,531 Cimetidine users. Check the latest studies of Cimetidine.

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.

On Jul, 27, 2026

83 people who take Cimetidine and Keflex together, and have interactions are studied.

Cimetidine and Keflex drug interactions.

What are the common drug interactions of Cimetidine and Keflex, by gender? *:

female:

Dysphagia (a condition in which swallowing is difficult or painful)
Pleural effusion (water on the lungs)
Anxiety
Bone disorder
Impaired healing
Inflammation
Tooth disorder (tooth disease)
Anaemia (lack of blood)
Pain in jaw
Osteonecrosis of jaw (death of bone of jaw)

male:

Chronic kidney disease
Renal failure (kidney dysfunction)
Extravasation (leakage of a fluid)
Inflammation
Mucosal inflammation (infection of mucous membrane)
Rash erythematous (redness of the skin)
Rash macular (small, flat red spots)
Rash papular (redness with papule)
Renal injury (kidney injury)

What are the common drug interactions of Cimetidine and Keflex, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Chronic kidney disease
Renal failure (kidney dysfunction)

40-49:

Dysphagia (a condition in which swallowing is difficult or painful)
Erythema (redness of the skin)
Pleural effusion (water on the lungs)
Bone disorder
Impaired healing
Inflammation
Tooth disorder (tooth disease)
Tooth extraction
Anaemia (lack of blood)
Pain in jaw

50-59:

Bursitis (inflammation of a bursa, typically one in the knee, elbow, or shoulder)
Capillary leak syndrome (capillary leaks plasma)
Cardiomegaly (increased size of heart than normal)
Depressed mood
Diarrhoea
Dysphagia (a condition in which swallowing is difficult or painful)
Ejection fraction (the percentage of blood that is pumped out of a filled ventricle as a result of a heartbeat)
Exostosis (formation of new bone on the surface of a bone)
Fall
Family stress

60+:

Chronic kidney disease
Anxiety
Nausea (feeling of having an urge to vomit)
Dysphagia (a condition in which swallowing is difficult or painful)
Erythema (redness of the skin)
Mitral valve incompetence (inefficient heart valve)
Nephrogenic anaemia (anaemia due to kidney disease)
Oedema peripheral (superficial swelling)
Pain in extremity
Sinus tachycardia (a heart rhythm with elevated rate of impulses originating from the sinoatrial node)

What are the existing conditions these people have? *

Pain: 40 people, 48.19%
Breast Cancer: 32 people, 38.55%
Depression: 30 people, 36.14%
Metastases To Bone (cancer spreads to bone): 29 people, 34.94%
High Blood Pressure: 20 people, 24.10%
Metastasis (spreadable cancer to other organ from origin): 20 people, 24.10%
Oedema (fluid collection in tissue): 16 people, 19.28%
Inflammation: 15 people, 18.07%
Breast Cancer Metastatic: 9 people, 10.84%
Indigestion: 9 people, 10.84%

* Approximation only. Some reports may have incomplete information.

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