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Thiamine and Vitamin B6: study protocols

11 study groups took Thiamine together with Vitamin B6. These are the doses the studies gave. They are not a recommendation.

Thiamine: what the research found →

Dose per serving from research: Thiamine

11 study groups in 8 studies say how much Thiamine participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 1 mg to 2.5 mg and 10 mg to 25 mg, 27% of 11 study groups each.

Daily doseStudy groups
500 mcg or less
1
500 mcg to 1 mg
2
1 mg to 2.5 mg
3
2.5 mg to 5 mg
0
5 mg to 10 mg
0
10 mg to 25 mg
3
25 mg to 50 mg
0
50 mg to 100 mg
1
100 mg to 250 mg
0
over 250 mg
1

Dose per serving from research: Vitamin B6

11 study groups in 8 studies say how much Vitamin B6 participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 1 mg to 2.5 mg, 27% of 11 study groups.

Daily doseStudy groups
500 mcg or less
1
500 mcg to 1 mg
2
1 mg to 2.5 mg
3
2.5 mg to 5 mg
0
5 mg to 10 mg
0
10 mg to 25 mg
2
25 mg to 50 mg
1
50 mg to 100 mg
1
100 mg to 250 mg
1

Commonly used together

9 of 11 study groups took Thiamine and Vitamin B6 with something else. Shown: what 3 or more different studies gave.

What was given together, not what works together.

Taken withStudy groups
Vitamin B12
8
Riboflavin
6
Folic Acid
5
Iron
4
Vitamin E
4
Vitamin A
3

11 study groups

Study
Diclofenac plus B vitamins versus diclofenac monotherapy in lumbago: the DOLOR study
2009 · Group DB (combination therapy) · Adults with acute lumbago
100 mg100 mg7 days187
A Randomized Control Trial of Dexketoprofen/Vitamin B (Thiamine, Pyridoxine and Cyanocobalamin) Fixed-Dose Combination in Post-Traumatic Grade I-II Cervical Sprains
2024 · Dexketoprofen/vitamin B · Adults aged 18 years or older, both sexes, with grade I–II post-traumatic cervical sprain and acute pain
300 mg150 mg7 days83
Effects of maternal micronutrient supplementation on fetal loss and infant mortality: a cluster-randomized trial in Nepal
2003 · Multiple micronutrients · Pregnant women in rural Nepal
1.6 mg2.2 mg——
Multivitamin supplementation of HIV-positive women during pregnancy reduces hypertension
2005 · Multivitamin plus vitamin A · HIV-positive pregnant Tanzanian women
20 mg25 mg——
Multivitamin supplementation of HIV-positive women during pregnancy reduces hypertension
2005 · Multivitamin without vitamin A · HIV-positive pregnant Tanzanian women
20 mg25 mg——
Evaluation of the efficacy of thiamine and pyridoxine in the treatment of symptomatic diabetic peripheral neuropathy
1997 · Group A · Adults with diabetes and symptomatic peripheral neuropathy
25 mg50 mg4 weeks100
Evaluation of the efficacy of thiamine and pyridoxine in the treatment of symptomatic diabetic peripheral neuropathy
1997 · Group B · Adults with diabetes and symptomatic peripheral neuropathy
1 mg1 mg4 weeks100
Effects of a food supplement containing phosphatidylserine on cognitive function in Chinese older adults with mild cognitive impairment: A randomized double-blind, placebo-controlled trial
2025 · intervention group · Chinese adults with mild cognitive impairment; mean age 67.95 years; 70 male and 120 female
960 mcg960 mcg1 year95
Daily supplementation of a multiple micronutrient powder improves folate but not thiamine, riboflavin, or vitamin B(12) status among young Laotian children: a randomized controlled trial
2022 · micronutrient powder group (MNP) · Children aged 6–23 months in rural Lao PDR; no disease-based selection, with high prevalence of undernutrition and micronutrient deficiencies
500 mcg500 mcg36 weeks130
Fortified breakfast cereal consumed daily for 12 wk leads to a significant improvement in micronutrient intake and micronutrient status in adolescent girls: a randomised controlled trial
2016 · Fortified cereal, morning · Females aged 16–19 years who regularly skipped breakfast and had low riboflavin status and haemoglobin; no diagnosed illness
1.21 mg1.74 mg12 weeks18