Fentanyl citrate and Drug level increased - a phase IV clinical study of FDA data

Summary:

Drug level increased is reported as a side effect among people who take Fentanyl citrate (fentanyl citrate), especially for people who are male, 30-39 old, also take Metformin, and have Atrial fibrillation/flutter.

The phase IV clinical study analyzes which people have Drug level increased when taking Fentanyl citrate. It is created by eHealthMe based on reports of 21,231 people who have side effects when taking Fentanyl citrate from the FDA, and is updated regularly.

What is Fentanyl citrate?

Fentanyl citrate has active ingredients of fentanyl citrate. It is often used in pain. eHealthMe is studying from 21,294 Fentanyl citrate users. Check the latest studies of Fentanyl citrate.

What is Drug level increased?

Drug level increased is found to be associated with 876 drugs and 1,136 conditions by eHealthMe. Check the latest studies of Drug level increased.

On Jul, 05, 2026

21,231 people reported to have side effects when taking Fentanyl citrate.
Among them, 66 people (0.31%) have Drug level increased.

Could Fentanyl citrate cause Drug level increased?

Among these 66 people:

What is the gender of people who have Drug level increased when taking Fentanyl citrate? *

female: 16.36 %
male: 83.64 %

What is the age of people who have Drug level increased when taking Fentanyl citrate? *

What are other drugs people take besides Fentanyl citrate? *

Metformin: 40 people, 60.61%
Symbicort: 37 people, 56.06%
Clonazepam: 21 people, 31.82%
Valsartan: 20 people, 30.30%
Metoprolol Tartrate: 18 people, 27.27%
Sertraline Hydrochloride: 18 people, 27.27%
Amlodipine Besylate: 18 people, 27.27%
Esomeprazole Magnesium: 17 people, 25.76%
Fentanyl: 16 people, 24.24%
Methylphenidate: 13 people, 19.70%

What are other side effects people have besides Drug level increased? *

Overdose: 46 people, 69.70%
Unresponsive To Stimuli: 45 people, 68.18%
Acute Hepatic Failure: 4 people, 6.06%
Bradycardia (abnormally slow heart action): 4 people, 6.06%
Electrocardiogram Qrs Complex Prolonged: 4 people, 6.06%
Ventricular Tachycardia (rapid heartbeat that originates in one of the lower chambers (the ventricles) of the heart): 4 people, 6.06%
Breathing - Slowed Or Stopped: 4 people, 6.06%
Cardiac Arrest: 4 people, 6.06%
Electrocardiogram Pr Prolongation: 4 people, 6.06%
Atrioventricular Block Second Degree (heart block second degree): 4 people, 6.06%

What are the existing conditions these people have? *

High Blood Pressure: 4 people, 6.06%
Dyslipidaemia (abnormal amount of lipids): 4 people, 6.06%
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): 4 people, 6.06%
Procedural Pain: 3 people, 4.55%
Hiv Infection: 3 people, 4.55%
Cancer Pain: 2 people, 3.03%
Tongue Black Hairy (a condition of the tongue where the filiform papillae elongate with black colour): 1 person, 1.52%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 1 person, 1.52%

* Approximation only. Some reports may have incomplete information.

Do you take Fentanyl citrate and have Drug level increased?

- Check whether Drug level increased 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 Fentanyl citrate:

Fentanyl citrate (21,294 reports)

Browse all side effects of Fentanyl citrate:

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 Drug level increased:

Drug level increased (876 drugs)

Browse all the conditions that are associated with Drug level increased:

Drug level increased (1,136 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on fentanyl citrate (the active ingredients of Fentanyl citrate) and Fentanyl citrate (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.