No vendor has published third-party results for this compound yet; rankings appear here the moment the record does.
L-theanine is the calming amino acid from tea, one of the best-tolerated and most-studied ingredients in the supplement world. Its presence here is catalog sprawl, not controversy.
Before trusting any label here, check the batch against published results, and use the calculator for dosing volumes.
Nothing on this page is medical advice; compounds shown are sold for research purposes only. Data is aggregated from publicly published third-party results and traces to its source.