Caffeine vs Caffeine + Theanine for focus
Short answer: For focus, more users report improvement with Caffeine + Theanine — 100% of 2 reports, versus 83% of 568 for Caffeine.
Caffeine has 680 meta-analyses and 2,072 randomized trials on PubMed; the other has not been graded.
Based on 2,414 reports about Caffeine and 15 about Caffeine + Theanine. Not medical advice.
| Caffeine Substance | Caffeine + Theanine Supplement | |
|---|---|---|
| Users say it helped | 47%helped1,448 reports · high confidence | 100%helped1 reports · few reports |
| Verdict | Mixed | Not enough data |
| Research | AResearch: Strong | Not graded |
| Meta-analyses / RCTs | 680 / 2,072 | — |
| Mainly used for | ||
| Energy % reporting improvement | 83% (908) | — |
| Focus % reporting improvement | 83% (568) | 100% (2) |
| Anxiety % reporting improvement | 16% (240) | — |
| Mood % reporting improvement | 74% (137) | — |
| Sleep % reporting improvement | 15% (131) | — |
| Common side effects | jitteriness, anxiety, insomnia, headache | None reported |
| Typical dose reported | 100-150 mg / daily | 100 mg caffeine / 200 mg theanine |
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.”
“Today I stacked 150 mg of phenylpiracetam with a 100 mg/200 mg caffeine/theanine capsule”
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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