Mirtazapine and Vitamin b1 decreased - a phase IV clinical study of FDA data

Summary:

Vitamin b1 decreased is reported as a side effect among people who take Mirtazapine (mirtazapine), especially for people who are female, 10-19 old, also take Hydrochlorothiazide, and have Ards (acute respiratory distress syndrome).

The phase IV clinical study analyzes which people have Vitamin b1 decreased when taking Mirtazapine. It is created by eHealthMe based on reports of 79,492 people who have side effects when taking Mirtazapine from the FDA, and is updated regularly.

What is Mirtazapine?

Mirtazapine has active ingredients of mirtazapine. It is often used in depression. eHealthMe is studying from 82,120 Mirtazapine users. Check the latest studies of Mirtazapine.

What is Vitamin b1 decreased?

Vitamin b1 decreased is found to be associated with 45 drugs and 97 conditions by eHealthMe. Check the latest studies of Vitamin b1 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, 22, 2026

79,492 people reported to have side effects when taking Mirtazapine.
Among them, 24 people (0.03%) have Vitamin b1 decreased.

Could Mirtazapine cause Vitamin b1 decreased?

Among these 24 people:

What is the gender of people who have Vitamin b1 decreased when taking Mirtazapine? *

female: 100 %
male: 0.0 %

What is the age of people who have Vitamin b1 decreased when taking Mirtazapine? *

What are other drugs people take besides Mirtazapine? *

Lorazepam: 24 people, 100.00%
Lansoprazole: 24 people, 100.00%
Hydrochlorothiazide: 24 people, 100.00%
Fluoxetine: 23 people, 95.83%
Amlodipine: 22 people, 91.67%
Vasopressin: 19 people, 79.17%
Epinephrine: 19 people, 79.17%
Remeron: 14 people, 58.33%
Fluoxetine Hydrochloride: 4 people, 16.67%
Amlodipine Besylate: 4 people, 16.67%

What are other side effects people have besides Vitamin b1 decreased? *

Hypotension (abnormally low blood pressure): 24 people, 100.00%
Ards (Acute Respiratory Distress Syndrome) (sudden failure of the respiratory (breathing) system): 24 people, 100.00%
Lactic Acidosis (low ph in body tissues): 23 people, 95.83%
Heart Rate Increased: 17 people, 70.83%
Electrocardiogram Abnormal: 17 people, 70.83%
Blood Lactic Acid Decreased: 17 people, 70.83%
Hypophagia (reduced food intake): 16 people, 66.67%
Cardiac Output Increased: 16 people, 66.67%
Hyperlactacidaemia (the acidosis and also reduces the capacity of the kidney): 15 people, 62.50%
Arrhythmias (irregular heartbeat): 14 people, 58.33%

What are the existing conditions these people have? *

Ards (Acute Respiratory Distress Syndrome) (sudden failure of the respiratory (breathing) system): 19 people, 79.17%
Hypotension (abnormally low blood pressure): 18 people, 75.00%
High Blood Pressure: 1 person, 4.17%

* Approximation only. Some reports may have incomplete information.

Do you take Mirtazapine and have Vitamin b1 decreased?

- Check whether Vitamin b1 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 Mirtazapine:

Mirtazapine (82,120 reports)

Browse all side effects of Mirtazapine:

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 Vitamin b1 decreased:

Vitamin b1 decreased (45 drugs)

Browse all the conditions that are associated with Vitamin b1 decreased:

Vitamin b1 decreased (97 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on mirtazapine (the active ingredients of Mirtazapine) and Mirtazapine (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.