In terms of attention, a study involving 27 healthy adults showed that a high dose of L-theanine could improve the neurophysiological indexes of attention processing in a dose-dependent manner (60)
However, it is clear that significant uncertainties arise from using animal data in the prediction of human toxicity responses due to anatomical, physiological, and biochemical differences between rodent and human respiratory systems and differences in breathing patterns (Cao et al., 2021
Syringe unit conversion table On a U-100 graduated syringe, 100 units equals 1 mL, so one unit equals 0.01 mL
Worth noting, L-carnitine that occurs naturally in food, mainly red meat, is absorbed far better than supplement doses, with dietary bioavailability reported as high as 75 percent