Arginine and Haematocrit decreased - a phase IV clinical study of FDA data

Summary:

Haematocrit decreased is reported as a side effect among people who take Arginine (l - arginine), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Vitamin B12, and have Primary pulmonary hypertension.

The phase IV clinical study analyzes which people have Haematocrit decreased when taking Arginine. It is created by eHealthMe based on reports of 2,399 people who have side effects when taking Arginine from the FDA, and is updated regularly.

What is Arginine?

Arginine has active ingredients of l - arginine. It is often used in erection problems. eHealthMe is studying from 2,612 Arginine users. Check the latest studies of Arginine.

What is Haematocrit decreased?

Haematocrit decreased is found to be associated with 1,624 drugs and 2,400 conditions by eHealthMe. Check the latest studies of Haematocrit decreased.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 31, 2026

2,399 people reported to have side effects when taking Arginine.
Among them, 11 people (0.46%) have Haematocrit decreased.

Could Arginine cause Haematocrit decreased?

Among these 11 people:

How long have people been on Arginine when they have Haematocrit decreased? *

What is the gender of people who have Haematocrit decreased when taking Arginine? *

female: 60 %
male: 40 %

What is the age of people who have Haematocrit decreased when taking Arginine? *

What are other drugs people take besides Arginine? *

What are other side effects people have besides Haematocrit decreased? *

Haemoglobin Decreased: 9 people, 81.82%
Fatigue (feeling of tiredness): 6 people, 54.55%
Blood Urea Increased: 6 people, 54.55%
Blood Creatinine Increased: 6 people, 54.55%
Weakness: 5 people, 45.45%
Dyspnea (difficult or laboured breathing): 5 people, 45.45%
Cough: 5 people, 45.45%
N-Terminal Prohormone Brain Natriuretic Peptide Increased: 4 people, 36.36%
Swelling: 4 people, 36.36%
Anaemia (lack of blood): 4 people, 36.36%

What are the existing conditions these people have? *

Primary Pulmonary Hypertension (primary high blood pressure that affects the arteries in the lungs and the right side of your heart): 4 people, 36.36%
Osteoporosis (bones weak and more likely to break): 2 people, 18.18%
Arthritis (form of joint disorder that involves inflammation of one or more joints): 2 people, 18.18%
Prostate Cancer: 1 person, 9.09%
Polycythaemia Vera (blood disorder in which the bone marrow makes too many red blood cells): 1 person, 9.09%
Pain: 1 person, 9.09%
Hereditary Neuropathic Amyloidosis (hereditary- diseases resulting from abnormal deposition of certain proteins (amyloid) in various bodily areas by problems with signals from the nerves): 1 person, 9.09%
Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 1 person, 9.09%
Age-Related Macular Degeneration: 1 person, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Arginine and have Haematocrit decreased?

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Related studies:

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

Arginine (2,612 reports)

Browse all side effects of Arginine:

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 Haematocrit decreased:

Haematocrit decreased (1,624 drugs)

Browse all the conditions that are associated with Haematocrit decreased:

Haematocrit decreased (2,400 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on l - arginine (the active ingredients of Arginine) and Arginine (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.