l arginine verses l-carnitine carnitine vs l vs l citrulline Citrulline vs. Arginine – Which One's Better for Vasodilation? @ Acetyl L l carnitine vs l arginine

This is what I found

The answer depends on your goal, training schedule, and consistency

[3] [4] In the brain, acetylcholine functions as a neurotransmitter and as a neuromodulator

Oral L-Carnitine Dosage For Weight Loss Because of the low bio-availability of oral L-carnitine(~18%), the oral dosage is much higher ranging from 2000mg-6000mg

Skin Health : Because its rich in collagen, gelatin may improve skin elasticity and hydration, potentially reducing signs of aging

Even though L-carnitine might support a few health benefits like weight loss, improved brain function, and reduced fatigue, more in-depth studies are required for a better understanding