l-carnitine tartrate research gram bottles with 100 servings L-Carnitine & L-Tartrate Capsule -
Description
Cholinergic pathways in the basal forebrain and hippocampus are necessary for attention, learning and memory [164]

"Randomized double-blind placebo-controlled trial of acetyl-L-carnitine for the prevention of taxane-induced neuropathy in women undergoing adjuvant breast cancer therapy." J Clin Oncol 31(20): 2627-2633

Certainly, there are people who have been identified with L-carnitine deficiency, often due to transporter issues (difficulty getting L-carnitine into cells, or absorbing it from the diet)

doi:10.3389/fphys.2020.00606 Shele G, Genkil J, Speelman D
