Concerta and Astigmatism - a phase IV clinical study of FDA data

Summary:

Astigmatism is reported as a side effect among people who take Concerta (methylphenidate hydrochloride), especially for people who are male, 60+ old, also take Ritalin, and have Metastases to bone.

The phase IV clinical study analyzes which people have Astigmatism when taking Concerta. It is created by eHealthMe based on reports of 20,995 people who have side effects when taking Concerta from the FDA, and is updated regularly.

What is Concerta?

Concerta has active ingredients of methylphenidate hydrochloride. It is often used in attention deficit hyperactivity disorder. eHealthMe is studying from 25,040 Concerta users. Check the latest studies of Concerta.

What is Astigmatism?

Astigmatism (refractive error of the eye in which parallel rays of light from an external source do not converge on a single focal point on the retina) is found to be associated with 365 drugs and 421 conditions by eHealthMe. Check the latest studies of Astigmatism.

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, 28, 2026

20,995 people reported to have side effects when taking Concerta.
Among them, 16 people (0.08%) have Astigmatism.

Among these 16 people:

What is the gender of people who have Astigmatism when taking Concerta? *

female: 50 %
male: 50 %

What is the age of people who have Astigmatism when taking Concerta? *

What are other drugs people take besides Concerta? *

What are other side effects people have besides Astigmatism? *

Headache (pain in head): 11 people, 68.75%
Nearsightedness (difficulty in seeing the far objects): 9 people, 56.25%
Weight Decreased: 8 people, 50.00%
Idiopathic Pulmonary Fibrosis (chronic lung disease): 8 people, 50.00%
Bunion (a painful swelling on the first joint of the big toe): 8 people, 50.00%
Hypercoagulation (increased tendency for clotting of the blood): 8 people, 50.00%
Breast Cancer Metastatic: 8 people, 50.00%
Bone Scan Abnormal: 8 people, 50.00%
Bone Atrophy (decrease in bone mass): 8 people, 50.00%
Hypotension (abnormally low blood pressure): 8 people, 50.00%

What are the existing conditions these people have? *

Metastases To Bone (cancer spreads to bone): 8 people, 50.00%
Constipation: 1 person, 6.25%

* Approximation only. Some reports may have incomplete information.

Do you take Concerta and have Astigmatism?

- Check whether Astigmatism 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 Concerta:

Concerta (25,040 reports)

Astigmatism treatments and more:

Astigmatism (2,086 reports)

Browse all side effects of Concerta:

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 Astigmatism:

Astigmatism (365 drugs)

Browse all the conditions that are associated with Astigmatism:

Astigmatism (421 conditions)

Related publications that referenced our studies

How the study uses the data?

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