Fentanyl-100 and Application site reaction - a phase IV clinical study of FDA data

Summary:

Application site reaction is reported as a side effect among people who take Fentanyl-100 (fentanyl), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Duragesic-100, and have Breakthrough pain.

The phase IV clinical study analyzes which people have Application site reaction when taking Fentanyl-100. It is created by eHealthMe based on reports of 6,924 people who have side effects when taking Fentanyl-100 from the FDA, and is updated regularly.

What is Fentanyl-100?

Fentanyl-100 has active ingredients of fentanyl. It is often used in pain. eHealthMe is studying from 7,047 Fentanyl-100 users. Check the latest studies of Fentanyl-100.

What is Application site reaction?

Application site reaction is found to be associated with 377 drugs and 550 conditions by eHealthMe. Check the latest studies of Application site reaction.

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 Sep, 01, 2026

6,924 people reported to have side effects when taking Fentanyl-100.
Among them, 52 people (0.75%) have Application site reaction.

Could Fentanyl-100 cause Application site reaction?

Among these 52 people:

How long have people been on Fentanyl-100 when they have Application site reaction? *

What is the gender of people who have Application site reaction when taking Fentanyl-100? *

female: 55.77 %
male: 44.23 %

What is the age of people who have Application site reaction when taking Fentanyl-100? *

What are other drugs people take besides Fentanyl-100? *

What are other side effects people have besides Application site reaction? *

Drug Ineffective: 12 people, 23.08%
Application Site Rash: 10 people, 19.23%
Feeling Abnormal: 5 people, 9.62%
Application Site Pruritus (application site severe itching of the skin): 4 people, 7.69%
Application Site Pain: 4 people, 7.69%
Therapeutic Response Decreased (less preventive response): 4 people, 7.69%
Nausea (feeling of having an urge to vomit): 3 people, 5.77%
Hypersensitivity: 3 people, 5.77%
Application Site Erythema (redness of the skin at application site): 3 people, 5.77%
High Blood Pressure: 3 people, 5.77%

What are the existing conditions these people have? *

Breakthrough Pain: 10 people, 19.23%
Depression: 7 people, 13.46%
Sleep Disorder: 6 people, 11.54%
Joint Pain: 4 people, 7.69%
Neck Pain: 3 people, 5.77%
Intervertebral Disc Degeneration (spinal disc degeneration): 3 people, 5.77%
Pain In Extremity: 3 people, 5.77%
Thyroid Diseases: 3 people, 5.77%
High Blood Cholesterol: 3 people, 5.77%
Stress And Anxiety: 2 people, 3.85%

* Approximation only. Some reports may have incomplete information.

Do you take Fentanyl-100 and have Application site reaction?

- Check whether Application site reaction 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-100:

Fentanyl-100 (7,047 reports)

Browse all side effects of Fentanyl-100:

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 Application site reaction:

Application site reaction (377 drugs)

Browse all the conditions that are associated with Application site reaction:

Application site reaction (550 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on fentanyl (the active ingredients of Fentanyl-100) and Fentanyl-100 (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.