Vitamin b1 and Codeine drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Vitamin b1 (thiamine) and Codeine (codeine sulfate). Common drug interactions include drug ineffective among females and syncope among males.

The phase IV clinical study analyzes what interactions people have when they take Vitamin b1 and Codeine. It is created by eHealthMe based on reports of 36 people who take the same drugs from the FDA, and is updated regularly.

What is Vitamin b1?

Vitamin b1 has active ingredients of thiamine. It is often used in fatigue. eHealthMe is studying from 4,662 Vitamin b1 users. Check the latest studies of Vitamin b1.

What is Codeine?

Codeine has active ingredients of codeine sulfate. It is often used in pain. eHealthMe is studying from 42,342 Codeine users. Check the latest studies of Codeine.

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, 15, 2026

36 people who take Vitamin b1 and Codeine together, and have interactions are studied.

Vitamin b1 and Codeine drug interactions.

What are the common drug interactions of Vitamin B1 and Codeine, by gender? *:

female:

Drug ineffective
Vomiting
Headache (pain in head)
Drug intolerance (drug sensitivity)
Abdominal discomfort
Hypersensitivity
Blood magnesium decreased
Nausea (feeling of having an urge to vomit)
Diarrhoea
Angioedema (rapid swelling of the dermis)

male:

Syncope (loss of consciousness with an inability to maintain postural tone)
Fall
Diarrhoea
Haematochezia (passage of stools containing blood)
Liver disorder (liver diseases)
Pneumonia
Haemarthrosis (haemarthrosis is where blood is able to enter the joint capsule)
Hypotension (abnormally low blood pressure)
Loss of consciousness
Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves)

What are the common drug interactions of Vitamin B1 and Codeine, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

Sciatica (a set of symptoms including pain caused by general compression or irritation of one of five spinal nerve roots of each sciatic nerve)
Sinusitis (inflammation of sinus)
Sleep disorder due to general medical condition, insomnia type (a conditions that prevent a person from getting restful sleep due to mental condition of not getting sleep)
Stomatitis (inflammation of mucous membrane of mouth)
Urticaria (rash of round, red welts on the skin that itch intensely)
Weight increased
Anti-cyclic citrullinated peptide antibody positive
Arthropathy
Asthma
Autoimmune disorder (a condition in which the immune system attacks the body's normal substances and tissue)

50-59:

n/a

60+:

Blood magnesium decreased
Diarrhoea
Catheter site erythema (redness of skin at catheter site)
Catheter site related reaction
Gastric dilatation (a twisted stomach)
Hernia (hernia happens when part of an internal organ or tissue bulges through a weak area of muscle)
Blood potassium decreased
Electrolyte imbalance
Abdominal discomfort
Device related infection

What are the existing conditions these people have? *

Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 11 people, 30.56%
Systemic Lupus Erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue): 10 people, 27.78%
Short-Bowel Syndrome (a condition in which the body cannot absorb enough fluids and nutrients because part of the small intestine is missing): 10 people, 27.78%
Nausea (feeling of having an urge to vomit): 10 people, 27.78%
Haemoglobin Decreased: 10 people, 27.78%
Headache (pain in head): 9 people, 25.00%
Fibromyalgia (a long-term condition which causes pain all over the body): 9 people, 25.00%
Indigestion: 9 people, 25.00%
Psoriatic Arthropathy (inflammation of the skin and joints with kin condition which typically causes patches (plaques) of red, scaly skin to develop): 9 people, 25.00%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 9 people, 25.00%

* Approximation only. Some reports may have incomplete information.

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