Does L-Theanine help with energy?
Often, yes. 68% of 97 people who reported on L-Theanine for energy say it improved. 9% noticed no change and 23% say it got worse. That is below the typical result for energy (87% across 95 options).
Energy: what users report
68%better97 reports · medium confidence
66 better9 no change22 worse
Ranked #75 of 95 for energy.
What people say about L-Theanine and energy
“This stuff truly works... I'm really surprised how much this supplement has helped with the generalized anxiety.”
“The only way I can enjoy coffee is with 300-500mg of L-Theanine. This seems to give me the energy boost I seek, without any jitters, anxiety or crash.”
“Since starting (200mg twice a day) I’ve almost completely lost the urge to drink.”
What the research says
AResearch: Strong18 meta-analyses · 78 trials on PubMed
None of the top reviews we found look specifically at energy. See all research on L-Theanine.
Side effects people mention
drowsiness 87vivid dreams 24fatigue 19headache 9anhedonia 8
What else is L-Theanine used for?
Information only — not medical advice. How we count