gplc glycine propionyl l carnitine propionyl-l-carnitine nutritional – Royalty-Free Vector Swanson Vitamins Propionyl-L-Carnitine HCl &
Description
While both types of supplements can increase carnitine levels, acetyl-L-carnitine has a little better absorption and may cross the blood-brain barrier more effectively.[ref] Carnitine is also available as an injectable or IV, available at health spas or clinics

In humans, administration of 2 g/day of ALCAR for 50 days increased plasma ALCAR concentrations by 43%, suggesting that either ALCAR was absorbed without prior hydrolysis or that L-carnitine was re-acetylated in the enterocytes (5)

Note that supplemental L-carnitine (doses, 0.6-7.0 g) is less efficiently absorbed compared to smaller amounts in food

[86] studied a model of chronic cerebral hypoperfusion in adult rats caused by permanent ligation of both common carotid arteries

More work using GPLC to combat resistance exercise-induced lipid peroxidation has also noted favorable findings (unpublished data)
