Though some may experience unpleasant side effects,all of the following supplements have some demonstrated research findings that they may perform to some extent as claimed except

Question

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Carnitine has not consistently shown to enhance athletic performance in well-controlled studies, unlike the other supplements listed (dietary nitrate, sodium bicarbonate, creatine, and beta-alanine), which have some evidence supporting their efficacy in improving aspects of exercise performance.

Though Some May Experience Unpleasant Side Effects,all of the Following