There is no dietary reference value for l-carnitine, but the body needs about 15mg per day this is typically a combination of carnitine made by the body and obtained from the diet
The per-serving cost is likewise the lowest on the list, as the table below illustrates
There's not enough evidence to say whether ALA is effective for these purposes
Zalachoras, I., Hollis, F., Ramos-Fernndez, E., Trovo, L., Sonnay, S., Geiser, E., Preitner, N., Steiner, P., Sandi, C., & Morat, L
K.ParsanathanR
Enhanced Energy and FocusContains anhydrous caffeine and L-tyrosine to boost mental alertness, concentration, and workout endurance