Caffeine + L-Theanine
Nootropics Depot · Supplements · 100mg / 200mg
4.3emerging evidence
6.9of 10
where to buy · 2 sellersfrom S$20S$0.33 per serving
Good for: energy, focus.
The score explained
evidence, testing and value, weighed before price
Why 6.9 of 10: Provisional: well-supported acute effect, masks rather than fixes.
what’s good
- Smooth alertness
- Cheap
worth knowing
- Masks, doesn't fix
- Testing unconfirmed
what the evidence says
The caffeine-theanine pairing has a genuine small-trial literature showing smoother alertness and attention than caffeine alone, with theanine taking the edge off jitters. It remains symptomatic management: well-evidenced as a focus aid, irrelevant to fixing whatever causes the fatigue.
Plain-language assessment of the human evidence. No cherry-picked citations.
reviews
4.3· 700 reviews, aggregated
Most reviewers take it for energy and report it doing its job quietly. Ratings cluster around 4.3 stars across retailer sites, with few complaints beyond shipping.
energyeasy to tolerategreat value
AI summary of public reviews
Stack this with
TestingATA Medical Fatigue Blood PanelBoth target energy. ATA Medical Fatigue Blood Panel gives you a baseline for energy before you spend more on fixes.
SupplementsSports Research L-Theanine 200mgBoth target sleep. Sports Research L-Theanine 200mg covers the nutrient side of sleep, a cheap daily base under everything else you do.
FoodAMGD Dietitian-Designed Meal PlanBoth target energy. AMGD Dietitian-Designed Meal Plan handles the food side of energy without you having to think about it.