Prozac and Complement factor c4 decreased - a phase IV clinical study of FDA data

Summary:

Complement factor c4 decreased is reported as a side effect among people who take Prozac (fluoxetine hydrochloride), especially for people who are male, 50-59 old, also take Zoloft, and have Head injury.

The phase IV clinical study analyzes which people have Complement factor c4 decreased when taking Prozac. It is created by eHealthMe based on reports of 74,788 people who have side effects when taking Prozac from the FDA, and is updated regularly.

What is Prozac?

Prozac has active ingredients of fluoxetine hydrochloride. It is often used in depression. eHealthMe is studying from 82,988 Prozac users. Check the latest studies of Prozac.

What is Complement factor c4 decreased?

Complement factor c4 decreased is found to be associated with 36 drugs and 217 conditions by eHealthMe. Check the latest studies of Complement factor c4 decreased.

On Jul, 08, 2026

74,788 people reported to have side effects when taking Prozac.
Among them, 28 people (0.04%) have Complement factor c4 decreased.

Could Prozac cause Complement factor c4 decreased?

Among these 28 people:

What is the gender of people who have Complement factor c4 decreased when taking Prozac? *

female: 10.71 %
male: 89.29 %

What is the age of people who have Complement factor c4 decreased when taking Prozac? *

What are other drugs people take besides Prozac? *

Zoloft: 24 people, 85.71%
Paxil: 19 people, 67.86%
Lortab: 15 people, 53.57%
Xanax: 3 people, 10.71%
Depakote: 2 people, 7.14%
Synthroid: 2 people, 7.14%
Minocycline Hydrochloride: 1 person, 3.57%
Aleve: 1 person, 3.57%
Dexilant: 1 person, 3.57%
Folic Acid: 1 person, 3.57%

What are other side effects people have besides Complement factor c4 decreased? *

Myoclonic Epilepsy (type of epilepsy with quick little jerks of the arms, shoulder, or occasionally the legs): 24 people, 85.71%
Arthropathy: 24 people, 85.71%
High Blood Pressure: 24 people, 85.71%
Indigestion: 24 people, 85.71%
Heart Palpitations (feelings or sensations that your heart is pounding or racing): 24 people, 85.71%
Headache (pain in head): 24 people, 85.71%
Fainting (loss of consciousness and postural tone): 24 people, 85.71%
Otitis (ear infection): 24 people, 85.71%
Dizziness: 24 people, 85.71%
Developmental Delay: 24 people, 85.71%

What are the existing conditions these people have? *

Head Injury: 14 people, 50.00%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 1 person, 3.57%
Psychotic Disorder: 1 person, 3.57%
Osteoporosis (bones weak and more likely to break): 1 person, 3.57%
Hypovitaminosis (any of several diseases caused by deficiency of one or more vitamins): 1 person, 3.57%
High Blood Pressure: 1 person, 3.57%
Hereditary Angioedema (recurrent episodes of severe swelling): 1 person, 3.57%
Gastric Ulcer (stomach ulcer): 1 person, 3.57%
Dizziness: 1 person, 3.57%
Arthritis Bacterial (form of joint disorder that involves inflammation of one or more joints due to bacterial infection): 1 person, 3.57%

* Approximation only. Some reports may have incomplete information.

Do you take Prozac and have Complement factor c4 decreased?

- Check whether Complement factor c4 decreased 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 Prozac:

Prozac (82,988 reports)

Browse all side effects of Prozac:

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 Complement factor c4 decreased:

Complement factor c4 decreased (36 drugs)

Browse all the conditions that are associated with Complement factor c4 decreased:

Complement factor c4 decreased (217 conditions)

How the study uses the data?

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