Periactin and Arrhythmias - a phase IV clinical study of FDA data

Summary:

Arrhythmias is reported as a side effect among people who take Periactin (cyproheptadine hydrochloride), especially for people who are male, 2-9 old, have been taking the drug for < 1 month also take Singulair, and have Wheezing.

The phase IV clinical study analyzes which people have Arrhythmias when taking Periactin. It is created by eHealthMe based on reports of 2,086 people who have side effects when taking Periactin from the FDA, and is updated regularly.

What is Periactin?

Periactin has active ingredients of cyproheptadine hydrochloride. It is often used in migraine. eHealthMe is studying from 2,214 Periactin users. Check the latest studies of Periactin.

What is Arrhythmias?

Arrhythmias (irregular heartbeat) is found to be associated with 2,760 drugs and 4,837 conditions by eHealthMe. Check the latest studies of Arrhythmias.

On Jul, 26, 2026

2,086 people reported to have side effects when taking Periactin.
Among them, 31 people (1.49%) have Arrhythmias.

Among these 31 people:

How long have people been on Periactin when they have Arrhythmias? *

What is the gender of people who have Arrhythmias when taking Periactin? *

female: 50 %
male: 50 %

What is the age of people who have Arrhythmias when taking Periactin? *

What are other drugs people take besides Periactin? *

Singulair: 5 people, 16.13%
Diazepam: 4 people, 12.90%
Acetaminophen: 3 people, 9.68%
Aristocort: 3 people, 9.68%
Citalopram Hydrobromide: 3 people, 9.68%
Onfi: 3 people, 9.68%
Neurontin: 3 people, 9.68%
Theo-Dur: 3 people, 9.68%
Lanoxin: 3 people, 9.68%
Zofran: 3 people, 9.68%

What are other side effects people have besides Arrhythmias? *

Fever: 12 people, 38.71%
Constipation: 7 people, 22.58%
Dyspnea (difficult or laboured breathing): 7 people, 22.58%
Fatigue (feeling of tiredness): 7 people, 22.58%
Nausea And Vomiting: 7 people, 22.58%
Nausea (feeling of having an urge to vomit): 6 people, 19.35%
Fall: 6 people, 19.35%
Abdominal Pain: 4 people, 12.90%
Hypotension (abnormally low blood pressure): 4 people, 12.90%
Headache (pain in head): 4 people, 12.90%

What are the existing conditions these people have? *

Wheezing (a high-pitched whistling sound made while you breath): 6 people, 19.35%
Hypersensitivity: 5 people, 16.13%
Sputum Retention: 3 people, 9.68%
Rhinorrhea (watery mucus discharge from the nose): 3 people, 9.68%
Asthma: 3 people, 9.68%
Lipidosis (disorder of lipid metabolism involving abnormal accumulation of lipids in the reticuloendothelial cells): 2 people, 6.45%
Dermatitis Atopic (inflammatory, chronically relapsing, non-contagious and pruritic skin disorder): 2 people, 6.45%
Diarrhea: 2 people, 6.45%
Dyspnea (difficult or laboured breathing): 2 people, 6.45%
Gastritis (inflammation of stomach): 2 people, 6.45%

* Approximation only. Some reports may have incomplete information.

Do you take Periactin and have Arrhythmias?

- Check whether Arrhythmias 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 Periactin:

Periactin (2,214 reports)

Arrhythmias treatments and more:

Arrhythmias (177,908 reports)

Browse all side effects of Periactin:

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 Arrhythmias:

Arrhythmias (2,760 drugs)

Browse all the conditions that are associated with Arrhythmias:

Arrhythmias (4,837 conditions)

How the study uses the data?

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