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

Summary:

Complement factor decreased is reported as a side effect among people who take Methotrexate (methotrexate sodium), especially for people who are female, 30-39 old, have been taking the drug for 1 - 6 months also take Adalat Cc, and have Hair loss.

The phase IV clinical study analyzes which people have Complement factor decreased when taking Methotrexate. It is created by eHealthMe based on reports of 599,650 people who have side effects when taking Methotrexate from the FDA, and is updated regularly.

What is Methotrexate?

Methotrexate has active ingredients of methotrexate sodium. It is often used in rheumatoid arthritis. eHealthMe is studying from 604,313 Methotrexate users. Check the latest studies of Methotrexate.

What is Complement factor decreased?

Complement factor decreased is found to be associated with 25 drugs and 73 conditions by eHealthMe. Check the latest studies of Complement factor decreased.

On Aug, 02, 2026

599,650 people reported to have side effects when taking Methotrexate.
Among them, 12 people (0.0%) have Complement factor decreased.

Could Methotrexate cause Complement factor decreased?

Among these 12 people:

How long have people been on Methotrexate when they have Complement factor decreased? *

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

female: 100 %
male: 0.0 %

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

What are other drugs people take besides Methotrexate? *

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

Rashes (redness): 5 people, 41.67%
Lupus-Like Syndrome (a disease symptom matches with lupus an immune disease): 4 people, 33.33%
Leukopenia (less number of white blood cells in blood): 4 people, 33.33%
Antinuclear Antibody Positive: 4 people, 33.33%
Dyspnea (difficult or laboured breathing): 4 people, 33.33%
Xerosis (abnormal dryness of the skin or mucus membranes): 3 people, 25.00%
Weight Increased: 3 people, 25.00%
Dry Eyes (lack of adequate tears): 3 people, 25.00%
Itching: 3 people, 25.00%
Inflammation: 3 people, 25.00%

What are the existing conditions these people have? *

Systemic Lupus Erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue): 3 people, 25.00%
Raynaud's Phenomenon (discoloration of the fingers, toes, and occasionally other areas): 3 people, 25.00%
Hair Loss: 3 people, 25.00%
Psoriatic Arthropathy (inflammation of the skin and joints with kin condition which typically causes patches (plaques) of red, scaly skin to develop): 2 people, 16.67%
Polyarthritis (arthritis which involves 5 or more joints simultaneously): 2 people, 16.67%
Juvenile Rheumatoid Arthritis (joint inflammation in children due to systemic disease): 1 person, 8.33%
Colitis (inflammation of colon): 1 person, 8.33%

* Approximation only. Some reports may have incomplete information.

Do you take Methotrexate and have Complement factor decreased?

- Check whether Complement factor decreased is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
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Related studies:

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

Methotrexate (604,313 reports)

Browse all side effects of Methotrexate:

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 decreased:

Complement factor decreased (25 drugs)

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

Complement factor decreased (73 conditions)

Related publications that referenced our studies

Henien M, Carey B, Hullah E, Sproat C, Patel V, "methotrexate-associated osteonecrosis of the jaw: A report of two cases", Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, 2017 Dec .
Henien M, Carey B, Hullah E, Sproat C, Patel V, "methotrexate-associated osteonecrosis of the jaw: A report of two cases", Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, 2017 Dec .

How the study uses the data?

The study uses data from the FDA. It is based on methotrexate sodium (the active ingredients of Methotrexate) and Methotrexate (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.