B1 vs Vitamin B12 for energy
Short answer: For energy, more users report improvement with Vitamin B12 — 90% of 103 reports, versus 50% of 2 for B1.
Vitamin B12 has 376 meta-analyses and 572 randomized trials on PubMed; the other has not been graded.
Based on 16 reports about B1 and 630 about Vitamin B12. Not medical advice.
| B1 Supplement | Vitamin B12 Supplement | |
|---|---|---|
| Users say it helped | 39%helped5 reports · few reports | 66%helped202 reports · high confidence |
| Verdict | Mostly negative | Mostly positive |
| Research | Not graded | AResearch: Strong |
| Meta-analyses / RCTs | — | 376 / 572 |
| Mainly used for | ||
| Energy % reporting improvement | 50% (2) | 90% (103) |
| Mood % reporting improvement | — | 89% (46) |
| Anxiety % reporting improvement | — | 62% (21) |
| Focus % reporting improvement | — | 88% (17) |
| Sleep % reporting improvement | — | 42% (12) |
| Common side effects | fatigue, brain fog | acne, anxiety, jitteriness, weakness |
| Typical dose reported | 500 mg / daily | 1 ml |
“Once I got my B1 levels back up, I was able to eat carbs and sugars again without getting crazy blood sugar spikes.”
Subgroup analyses indicated that the use of vitamin B12 supplements among vegans contributes to significant improvements in all biomarker concentrations compared to their unsupplemented counterparts. Our findings underscore the need for improved strategies to redress poor vitamin B12 status with appropriate B12 supplementation use among those adhering to vegetarian and vegan diets.
Nutr Bull, 2024 ↗“I supplemented with sublingual b12 and iron and daily electrolytes and I'm feeling much better.”
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Percentages come from first-hand user reports and are not clinical outcomes. Talk to a doctor before starting, stopping or combining anything. How we rate