l carnitine tartrate meta analysis Acute L-Carnitine Supplementation Does Not Improve CrossFit® Performance: A Randomized, Double-Blind, Placebo-Controlled Crossover Study Role of L-carnitine in exercise

For anyone specifically looking at l-carnitine benefits for females, I can share my perspective

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(2014).Ismail AM, Hamed AH, Saso S, Thabet HH

The resulting cells were harvested through centrifugation at 800 rpm for 5 min and then washed twice with ice-cold phosphate-buffered saline (PBS)

In patients with primary carnitine deficiency, carnitine is absorbed by the gut through the amino acid transporter B 0,+ (ATB 0,+ ), that has lower affinity toward carnitine (K m =800 M) than OCTN2 (K m 35 M) [14, 98100]), but exhibits much higher capacity than OCTN2 [150]

Apart from energy metabolism, it also possesses cognitive benefits