Endocrinologists do not normally applaud slide decks
GSH brain concentrations are not commonly measured using 1 H-MRS, because relative to other 1 H-MRS-detectable neurochemicals (e.g., creatine (Cr), choline, N -acetylasparate), GSH concentrations are substantially lower
Give it a shake
For instance, a small, insulated lunch bag or plastic container with a cold gel pack, or a thermos filled with cold water can help keep your medicine cool
Case in point, 7 days of L-citrulline supplementation at a daily dose of 6 g significantly increase plasma citrulline, arginine, and nitrite levels, VO 2 kinetics, in response to moderate intensity (70% VO 2 peak) exercise performance [18]
Here's an honest look at how they compare on results, side effects, and cost, backed by FDA and NIH sources