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Circu ML, Rodriguez C, Maloney R, Moyer MP, Aw TY
or low potassium level - leg cramps, constipation, irregular heartbeats, fluttering in your chest, increased thirst or urination, numbness or tingling, muscle weakness or limp feeling
However, the evidence regarding the effects of l-theaninecaffeine combination on sustained attention have been fairly consistent in suggesting the utility of both compounds in moderately improving measures of sustained attention in healthy adults 36
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