Caffeine vs Green Tea Extract for focus
Short answer: For focus, more users report improvement with Green Tea Extract — 95% of 55 reports, versus 83% of 568 for Caffeine.
Caffeine has 680 meta-analyses and 2,072 randomized trials on PubMed; Green Tea Extract has 32 and 144.
Based on 2,414 reports about Caffeine and 635 about Green Tea Extract. Not medical advice.
| Caffeine Substance | Green Tea Extract Supplement | |
|---|---|---|
| Users say it helped | 47%helped1,448 reports · high confidence | 69%helped203 reports · high confidence |
| Verdict | Mixed | Mostly positive |
| Research | AResearch: Strong | AResearch: Strong |
| Meta-analyses / RCTs | 680 / 2,072 | 32 / 144 |
| Mainly used for | ||
| Energy % reporting improvement | 83% (908) | 93% (54) |
| Focus % reporting improvement | 83% (568) | 95% (55) |
| Anxiety % reporting improvement | 16% (240) | 84% (43) |
| Mood % reporting improvement | 74% (137) | 91% (23) |
| Sleep % reporting improvement | 15% (131) | 46% (13) |
| Common side effects | jitteriness, anxiety, insomnia, headache | insomnia, liver damage, liver failure, stomach issues |
| Typical dose reported | 100-150 mg / daily | 750 mg |
To avoid reductions in total sleep time, coffee (107 mg per 250 mL) should be consumed at least 8.8 h prior to bedtime and a standard serve of pre-workout supplement (217.5 mg) should be consumed at least 13.2 h prior to bedtime. The results of the present study provide evidence-based guidance for the appropriate consumption of caffeine to mitigate the deleterious effects on sleep.
Sleep Med Rev, 2023 ↗“Personally, I feel and function much better if I keep my caffeine intake very low to zero.”
Our results suggest that GTE supplementation can attenuate oxidative stress, BM, BMI and BFP, which are thought to negatively affect human health. Moreover, GTE as a nutraceutical dietary supplement can increase TAC and adiponectin.
Br J Nutr, 2024 ↗“So I switched to green tea in the morning! Holy shit. The change has been incredible. I feel way less anxious, all depression thoughts have dissipated and I am proud of who I am.”
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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