1. Home
  2. Analysis
  3. Marplan
  4. Haldol

Marplan vs. Haldol: side effect and effectiveness comparison (a real world drug study)

Summary:

We compare the side effects and drug effectiveness of Marplan and Haldol. The phase IV clinical study is created by eHealthMe based on reports (from sources including the FDA) of 39,671 people who take Marplan and Haldol, and is updated regularly.

What is Marplan?

Marplan has active ingredients of isocarboxazid. It is often used in depression. eHealthMe is studying from 66 Marplan users. Check the latest studies of Marplan.

What is Haldol?

Haldol has active ingredients of haloperidol. It is often used in schizophrenia. eHealthMe is studying from 23,102 Haldol users. Check the latest studies of Haldol.

On Jul, 12, 2026

39,671 people who take Marplan and Haldol are studied.

Marplan vs Haldol drug comparison reports.

Drugs being compared in this study:

  • Marplan (isocarboxazid)
  • Haldol (haloperidol)

Most common side effects of the drugs, overall:

Click here to view

Most common side effects of the drugs, in long term (1+ years) use:

Click here to view

Drug effectiveness:

Marplan:

  • not at all: 0 %
  • somewhat: 37.5 %
  • moderate: 25.0 %
  • high: 12.5 %
  • very high: 25.0 %

Haldol:

  • not at all: 21.52 %
  • somewhat: 22.42 %
  • moderate: 24.24 %
  • high: 20.0 %
  • very high: 11.82 %

Want to compare Marplan with Haldol?

- Personalize this study to your gender and age (0-99+)

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.

Related publications that referenced our studies

Related studies

Alternative drugs to, pros and cons of:

Browse all side effects of Marplan:

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 Haldol:

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 is based on isocarboxazid and haloperidol (the active ingredients of Marplan and Haldol, respectively). Other drugs that have the same active ingredients (e.g. generic drugs or brand names) are also considered. Dosage of drugs is not considered in the study.

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.

Recent studies on eHealthMe:

© 2026 eHealthMe.com. All rights reserved. Use of this site constitutes acceptance of eHealthMe.com's terms of service and privacy policy.