difference between l arginine and l carnitine Yes — the ones we were talking about are L-Citrulline L-Arginine. 1. L-Citrulline — more efficient, that's what watermelon converts to anyway. Usually sold as L-Citrulline or Citrulline Malate powder/capsule. 2 L-Carnitine vs L-Arginine: Understanding Their
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