B Complex vs B1 for energy
Short answer: For energy, more users report improvement with B Complex — 95% of 93 reports, versus 50% of 2 for B1.
B Complex has 246 meta-analyses and 106 randomized trials on PubMed; the other has not been graded.
Based on 572 reports about B Complex and 16 about B1. Not medical advice.
| B Complex Supplement | B1 Supplement | |
|---|---|---|
| Users say it helped | 66%helped166 reports · high confidence | 39%helped5 reports · few reports |
| Verdict | Mostly positive | Mostly negative |
| Research | AResearch: Strong | Not graded |
| Meta-analyses / RCTs | 246 / 106 | — |
| Mainly used for | ||
| Energy % reporting improvement | 95% (93) | 50% (2) |
| Mood % reporting improvement | 91% (35) | — |
| Focus % reporting improvement | 84% (25) | — |
| Anxiety % reporting improvement | 43% (23) | — |
| Sleep % reporting improvement | 64% (11) | — |
| Common side effects | anxiety, insomnia, headache, neuropathy | fatigue, brain fog |
| Typical dose reported | 500 mcg B12 | 500 mg / daily |
This meta-analysis suggests that B vitamin supplementation is associated with slowing of cognitive decline, especially in populations who received early intervention and intervention of long duration; the study also indicates that higher intake of dietary folate, but not B12 or B6, is associated with a reduced risk of incident dementia in non-dementia aged population. Given the prevalence of dementia cases in many countries with aging populations, public health policies should be introduced to ensure that subgroups of the population at risk have an adequate B vitamin status.
Nutr Rev, 2022 ↗“Adding a B complex has totally eliminated my depression lethargy brain fog insomnia and anxiety.”
“Once I got my B1 levels back up, I was able to eat carbs and sugars again without getting crazy blood sugar spikes.”
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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