Cosopt and Haemoglobin decreased - a phase IV clinical study of FDA data

Summary:

Haemoglobin decreased is reported as a side effect among people who take Cosopt (dorzolamide hydrochloride; timolol maleate), especially for people who are male, 60+ old, have been taking the drug for 1 - 2 years also take Xalatan, and have High blood pressure.

The phase IV clinical study analyzes which people have Haemoglobin decreased when taking Cosopt. It is created by eHealthMe based on reports of 8,872 people who have side effects when taking Cosopt from the FDA, and is updated regularly.

What is Cosopt?

Cosopt has active ingredients of dorzolamide hydrochloride; timolol maleate. It is often used in glaucoma. eHealthMe is studying from 9,029 Cosopt users. Check the latest studies of Cosopt.

What is Haemoglobin decreased?

Haemoglobin decreased is found to be associated with 2,405 drugs and 3,133 conditions by eHealthMe. Check the latest studies of Haemoglobin decreased.

On Jul, 30, 2026

8,872 people reported to have side effects when taking Cosopt.
Among them, 79 people (0.89%) have Haemoglobin decreased.

Could Cosopt cause Haemoglobin decreased?

Among these 79 people:

How long have people been on Cosopt when they have Haemoglobin decreased? *

What is the gender of people who have Haemoglobin decreased when taking Cosopt? *

female: 43.84 %
male: 56.16 %

What is the age of people who have Haemoglobin decreased when taking Cosopt? *

What are other drugs people take besides Cosopt? *

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

Fatigue (feeling of tiredness): 21 people, 26.58%
Haematocrit Decreased: 19 people, 24.05%
Dizziness: 18 people, 22.78%
Weakness: 16 people, 20.25%
Thrombocytopenia (decrease of platelets in blood): 15 people, 18.99%
Dyspnea (difficult or laboured breathing): 14 people, 17.72%
High Blood Pressure: 13 people, 16.46%
Constipation: 11 people, 13.92%
Urinary Tract Infection: 11 people, 13.92%
Pneumonia: 11 people, 13.92%

What are the existing conditions these people have? *

High Blood Pressure: 9 people, 11.39%
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): 8 people, 10.13%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 7 people, 8.86%
Nausea (feeling of having an urge to vomit): 5 people, 6.33%
Diabetes: 5 people, 6.33%
Nausea And Vomiting: 4 people, 5.06%
Depression: 4 people, 5.06%
Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 4 people, 5.06%
Ulcerative Colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 4 people, 5.06%
Hypersensitivity: 4 people, 5.06%

* Approximation only. Some reports may have incomplete information.

Do you take Cosopt and have Haemoglobin decreased?

- Check whether Haemoglobin 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 Cosopt:

Cosopt (9,029 reports)

Haemoglobin decreased treatments and more:

Haemoglobin decreased (141,785 reports)

How severe was Haemoglobin decreased and when was it recovered:

Haemoglobin decreased in Cosopt

Expand to all the drugs that have ingredients of dorzolamide hydrochloride; timolol maleate:

Haemoglobin decreased and drugs with ingredients of dorzolamide hydrochloride; timolol maleate

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Cosopt:

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 Haemoglobin decreased:

Haemoglobin decreased (2,405 drugs)

Browse all the conditions that are associated with Haemoglobin decreased:

Haemoglobin decreased (3,133 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on dorzolamide hydrochloride; timolol maleate (the active ingredients of Cosopt) and Cosopt (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.