Keytruda and Vancomycin drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Keytruda (pembrolizumab) and Vancomycin (vancomycin). Common drug interactions include eosinophilia among females and delirium among males.

The phase IV clinical study analyzes what interactions people have when they take Keytruda and Vancomycin. It is created by eHealthMe based on reports of 17 people who take the same drugs from the FDA, and is updated regularly.

What is Keytruda?

Keytruda has active ingredients of pembrolizumab. It is often used in renal cell carcinoma. eHealthMe is studying from 57,404 Keytruda users. Check the latest studies of Keytruda.

What is Vancomycin?

Vancomycin has active ingredients of vancomycin. eHealthMe is studying from 17,165 Vancomycin users. Check the latest studies of Vancomycin.



On Jul, 19, 2026

17 people who take Keytruda and Vancomycin together, and have interactions are studied.

Keytruda and Vancomycin drug interactions.

What are the common drug interactions of Keytruda and Vancomycin, by gender? *:

female:

  1. Eosinophilia (eosinophil count in the peripheral blood exceeds)
  2. Aspartate aminotransferase increased
  3. Blood magnesium decreased
  4. Blood potassium decreased
  5. Blood sodium decreased
  6. Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
  7. Feeling hot
  8. Hyperkalaemia (damage to or disease of the kidney)
  9. Hyponatraemia (abnormally low level of sodium in the blood; associated with dehydration)
  10. Pyrexia (fever)

male:

  1. Delirium (wild excitement)
  2. Adverse drug reaction
  3. Vertebral foraminal stenosis (narrowing of the intervertebral foramen)
  4. Blood pressure decreased
  5. Clostridium difficile colitis (inflammation of colon by clostridium difficile bacteria infection)
  6. Cystitis (inflammation of the wall of the bladder)
  7. Death
  8. Dysphonia (speech disorder attributable to a disorder of phonation)
  9. Fatigue (feeling of tiredness)
  10. Joint swelling

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

n/a

50-59:

  1. Eosinophilia (eosinophil count in the peripheral blood exceeds)
  2. Feeling hot
  3. Pyrexia (fever)
  4. Rash

60+:

  1. Aspartate aminotransferase increased
  2. Delirium (wild excitement)
  3. Dysphonia (speech disorder attributable to a disorder of phonation)
  4. Fatigue (feeling of tiredness)
  5. Hyperkalaemia (damage to or disease of the kidney)
  6. Hyponatraemia (abnormally low level of sodium in the blood; associated with dehydration)
  7. Joint swelling
  8. Thyroid disorder (thyroid diseases)
  9. Urinary tract infection
  10. Adverse drug reaction

What are the existing conditions these people have? *

  1. Squamous Cell Carcinoma (a cancer of a kind of epithelial cell): 6 people, 35.29%
  2. Mediastinitis (inflammation of the tissues in the mid-chest): 6 people, 35.29%
  3. Urinary Tract Infection: 2 people, 11.76%
  4. Metastatic Malignant Melanoma (spreadable cancer tumour of melanine): 2 people, 11.76%
  5. Endometrial Cancer: 2 people, 11.76%
  6. Malignant Melanoma (skin cancer rises from melancytes): 2 people, 11.76%
  7. Hyponatremia (abnormally low level of sodium in the blood; associated with dehydration): 1 person, 5.88%
  8. Aspartate Aminotransferase Increased: 1 person, 5.88%
  9. Back Pain: 1 person, 5.88%
  10. Constipation: 1 person, 5.88%

* Approximation only. Some reports may have incomplete information.

Do you take Keytruda and Vancomycin?

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Related studies:

Effectiveness of, side effects of, and alternative drugs to the 2 drugs:

Browse all drug interactions of Keytruda and Vancomycin:

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

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 Keytruda:

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 side effects of Vancomycin:

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 interactions between Keytruda and drugs from A to Z:

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 interactions between Vancomycin and drugs from A to Z:

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

How the study uses the data?

The study uses data from the FDA. It is based on pembrolizumab and vancomycin (the active ingredients of Keytruda and Vancomycin, respectively), and Keytruda and Vancomycin (the brand names). 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.



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