Thiamine (vitamin B1)
People mainly take Thiamine (vitamin B1) for mood, energy. Based on 4 first-hand reports. Ranked #1545 of 1,974 overall.
7
User score
Not enough data0% positive0% mixed0% negative100% unclear
Of reports that state an outcome, 0% are positive.
Clinical research
Research pending
What Thiamine (vitamin B1) does, according to users
Of the people who reported each effect, the share who said it got better.
betterno changeworse
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
Research data for Thiamine (vitamin B1) is being compiled.
Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
3x dailyas reported
1.8+ mgdaily
Reported side effects
How often each side effect came up across all reports.
No side effects reported so far.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“We support some people to take thiamine 3x daily”
“Thiamine (B1): 1.8+ mg per day, though there doesn't seem to be an upper limit”
“B1 also known as thiamine take nutritional yeast”
“High dose thiamine (B1) for energy / mood”
Other options for mood
Resistance Training
Lifestyle · 53 reports
100% report better mood
Mostly positive
Retatrutide
Peptide · 298 reports
69% report better mood
Mostly positiveBResearch: Moderate
Caffeine + L-Theanine
Supplement · 46 reports
100% report better mood
Mostly positive
Tirzepatide
Medication · 219 reports
76% report better mood
Mostly positiveAResearch: Strong
Creatine Monohydrate
Supplement · 139 reports
88% report better mood
Mostly positiveAResearch: Strong
Magnesium Malate
Supplement · 103 reports
100% report better mood
Mostly positiveDResearch: None
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate