however, the bioavailability of ALCAR is thought to be higher than that of L-carnitine
Urinary losses of carnitine via this route can be 10-fold greater than the sum of daily carnitine intake and biosynthesis and lead to systemic carnitine depletion (see Drug interactions) (39)
Therefore, when you take carnitine is probably not as important as just remembering to take it
It's also naturally found in foods, especially animal products like beef, poultry, and dairy, and available as a dietary supplement where it's sold alone or alongside other ingredients intended to support fat loss or increase exercise performance
It is always advised to read the label instructions before consuming it and consult a healthcare professional if you face any physiological issues after its consumption
A 2013 meta-analysis of 17 randomized, placebo-controlled studies in a total of 1,625 participants with heart failure found that oral L-carnitine (1.5-6 g/day for seven days to three years) significantly improved several measures of cardiac functional capacity (including exercise tolerance and markers of the left ventricle function), yet had no impact on all-cause mortality (56)
