Thiamine hcl and Constipation - a phase IV clinical study of FDA data

Summary:

Constipation is reported as a side effect among people who take Thiamine hcl (thiamine (vitamin b1)), especially for people who are female, 60+ old, also take Aldactone, and have Multiple myeloma.

The phase IV clinical study analyzes which people have Constipation when taking Thiamine hcl. It is created by eHealthMe based on reports of 889 people who have side effects when taking Thiamine hcl from the FDA, and is updated regularly.

What is Thiamine hcl?

Thiamine hcl has active ingredients of thiamine (vitamin b1). eHealthMe is studying from 898 Thiamine hcl users. Check the latest studies of Thiamine hcl.

What is Constipation?

Constipation is found to be associated with 3,004 drugs and 4,614 conditions by eHealthMe. Check the latest studies of Constipation.

On Jul, 25, 2026

889 people reported to have side effects when taking Thiamine hcl.
Among them, 13 people (1.46%) have Constipation.

Among these 13 people:

What is the gender of people who have Constipation when taking Thiamine hcl? *

female: 61.54 %
male: 38.46 %

What is the age of people who have Constipation when taking Thiamine hcl? *

What are other drugs people take besides Thiamine hcl? *

Revlimid: 3 people, 23.08%
Coumadin: 3 people, 23.08%
Aldactone: 3 people, 23.08%
Sovaldi: 2 people, 15.38%
Nitrostat: 2 people, 15.38%
Klonopin: 2 people, 15.38%
Ondansetron: 2 people, 15.38%
Miralax: 2 people, 15.38%
Oxycodone And Acetaminophen: 2 people, 15.38%
Phenergan: 2 people, 15.38%

What are other side effects people have besides Constipation? *

Abdominal Pain: 6 people, 46.15%
Nausea And Vomiting: 6 people, 46.15%
Nausea (feeling of having an urge to vomit): 5 people, 38.46%
Dyspnea (difficult or laboured breathing): 4 people, 30.77%
Fatigue (feeling of tiredness): 4 people, 30.77%
Insomnia (sleeplessness): 4 people, 30.77%
Rashes (redness): 4 people, 30.77%
Chest Pain: 4 people, 30.77%
Pain In Extremity: 4 people, 30.77%
Swallowing Difficulty: 4 people, 30.77%

What are the existing conditions these people have? *

Multiple Myeloma (cancer of the plasma cells): 4 people, 30.77%
Chronic Myeloid Leukaemia (long lasting type of cancer that starts in the blood-forming cells of the bone marrow and invades the blood): 3 people, 23.08%
Nausea (feeling of having an urge to vomit): 2 people, 15.38%
Hepatic Cirrhosis (chronic liver disease characterized by replacement of liver tissue by fibrosis, scar tissue): 2 people, 15.38%
Diarrhea: 2 people, 15.38%
Breakthrough Pain: 2 people, 15.38%
Sleep Disorder: 1 person, 7.69%
Pain: 1 person, 7.69%
Carcinoid Tumor Of The Small Bowel: 1 person, 7.69%
Carcinoid Tumor: 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Thiamine hcl and have Constipation?

- Check whether Constipation 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 Thiamine hcl:

Thiamine hcl (898 reports)

Constipation treatments and more:

Constipation (337,879 reports)

Browse all side effects of Thiamine hcl:

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 Constipation:

Constipation (3,004 drugs)

Browse all the conditions that are associated with Constipation:

Constipation (4,614 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on thiamine (vitamin b1) (the active ingredients of Thiamine hcl) and Thiamine hcl (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.