Propecia and Negative thoughts - a phase IV clinical study of FDA data

Summary:

Negative thoughts is reported as a side effect among people who take Propecia (finasteride), especially for people who are male, 10-19 old, have been taking the drug for 5 - 10 years also take Fluoxetine,.

The phase IV clinical study analyzes which people have Negative thoughts when taking Propecia. It is created by eHealthMe based on reports of 9,411 people who have side effects when taking Propecia from the FDA, and is updated regularly.

What is Propecia?

Propecia has active ingredients of finasteride. It is often used in hair loss. eHealthMe is studying from 9,757 Propecia users. Check the latest studies of Propecia.

What is Negative thoughts?

Negative thoughts is found to be associated with 241 drugs and 408 conditions by eHealthMe. Check the latest studies of Negative thoughts.

On Aug, 08, 2026

9,411 people reported to have side effects when taking Propecia.
Among them, 17 people (0.18%) have Negative thoughts.

Among these 17 people:

How long have people been on Propecia when they have Negative thoughts? *

What is the gender of people who have Negative thoughts when taking Propecia? *

female: 0.0 %
male: 100 %

What is the age of people who have Negative thoughts when taking Propecia? *

What are other drugs people take besides Propecia? *

Fluoxetine: 7 people, 41.18%
Gabapentin: 2 people, 11.76%
Lexapro: 1 person, 5.88%
Fluoxetine Hydrochloride: 1 person, 5.88%

What are other side effects people have besides Negative thoughts? *

Memory Loss: 15 people, 88.24%
Stress And Anxiety: 15 people, 88.24%
Disturbance In Attention: 14 people, 82.35%
Depression: 13 people, 76.47%
Depressed Mood: 13 people, 76.47%
Cognitive Disorder (mental health disorders affects learning, memory, perception, and problem solving): 13 people, 76.47%
Insomnia (sleeplessness): 13 people, 76.47%
Muscle Spasms (muscle contraction): 12 people, 70.59%
Fatigue (feeling of tiredness): 12 people, 70.59%
Agitation (state of anxiety or nervous excitement): 12 people, 70.59%

* Approximation only. Some reports may have incomplete information.

Do you take Propecia and have Negative thoughts?

- Check whether Negative thoughts is associated with a drug or a condition
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Related studies:

Effectiveness of, long term effects of, and alternative drugs to Propecia:

Propecia (9,757 reports)

Browse all side effects of Propecia:

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 Negative thoughts:

Negative thoughts (241 drugs)

Browse all the conditions that are associated with Negative thoughts:

Negative thoughts (408 conditions)

Related publications that referenced our studies

Fouda AM, Bazeed AM, "Hematuria and Hematospermia Associated with the Use of Finasteride for the Treatment of Androgenic Alopecia: A Case Report", Drug Safety-Case Reports, 2017 Dec .
Fouda AM, Bazeed AM, "Hematuria and Hematospermia Associated with the Use of Finasteride for the Treatment of Androgenic Alopecia: A Case Report", Drug Safety-Case Reports, 2017 Dec .

How the study uses the data?

The study uses data from the FDA. It is based on finasteride (the active ingredients of Propecia) and Propecia (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.