does l-carnitine tartrate hcl have soy L-Tartrate Capsules Nature's Truth, Acetyl L-Carnitine, 1000mg,
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Metabolic factors in peripheral circulatory regulation

As the rate-limiting enzyme in the oxidation of LCFAs, CPT1 has three isoenzymes, CPT1A, CPT1B and CPT1C, which exhibit significantly different kinetic and regulatory properties

But, if you want to improve cognitive function, acetyl-L-carnitine is a better option since it passes through the blood-brain barrier

2002 Mar;13(3):708-14.Effects of L-carnitine supplementation in maintenance hemodialysis patients: a systematic review

& Witteman, B
