Sumycin and Melanocytic naevus - a phase IV clinical study of FDA data

Summary:

Melanocytic naevus is reported as a side effect among people who take Sumycin (tetracycline hydrochloride), especially for people who are male, 20-29 old, also take Accutane, and have Acne.

The phase IV clinical study analyzes which people have Melanocytic naevus when taking Sumycin. It is created by eHealthMe based on reports of 143 people who have side effects when taking Sumycin from the FDA, and is updated regularly.

What is Sumycin?

Sumycin has active ingredients of tetracycline hydrochloride. eHealthMe is studying from 145 Sumycin users. Check the latest studies of Sumycin.

What is Melanocytic naevus?

Melanocytic naevus (a type of lesion that contains nevus cells (a type of melanocyte)) is found to be associated with 559 drugs and 218 conditions by eHealthMe. Check the latest studies of Melanocytic naevus.

On Jul, 07, 2026

143 people reported to have side effects when taking Sumycin.
Among them, 21 people (14.69%) have Melanocytic naevus.

Among these 21 people:

What is the gender of people who have Melanocytic naevus when taking Sumycin? *

female: 9.52 %
male: 90.48 %

What is the age of people who have Melanocytic naevus when taking Sumycin? *

What are other drugs people take besides Sumycin? *

What are other side effects people have besides Melanocytic naevus? *

Inflammatory Bowel Disease: 21 people, 100.00%
Gastrointestinal Disorder (functional problems of gastrointestinal tract): 21 people, 100.00%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 21 people, 100.00%
Irritable Bowel Syndrome: 21 people, 100.00%
Anaemia (lack of blood): 21 people, 100.00%
Ulcerative Colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 21 people, 100.00%
Intestinal Haemorrhage (bleeding from intestine): 21 people, 100.00%
Depression: 20 people, 95.24%
Cyst (a closed sac): 19 people, 90.48%
Pancreatitis (inflammation of pancreas): 19 people, 90.48%

What are the existing conditions these people have? *

Acne (skin problems that cause pimples): 19 people, 90.48%

* Approximation only. Some reports may have incomplete information.

Do you take Sumycin and have Melanocytic naevus?

- Check whether Melanocytic naevus 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 Sumycin:

Sumycin (145 reports)

Browse all side effects of Sumycin:

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 Melanocytic naevus:

Melanocytic naevus (559 drugs)

Browse all the conditions that are associated with Melanocytic naevus:

Melanocytic naevus (218 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on tetracycline hydrochloride (the active ingredients of Sumycin) and Sumycin (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.