acetyl l carnitine injectable L-Carnitine Pen L-Carnitine Injections: A Clinical Guide
Description
Diabetes 55 , 25022509 (2006)

in skincare its brightening mechanism works differently from niacinamide or vitamin C it acts on the melanin synthesis switch itself, reducing tyrosinase activity and shifting eumelanin (dark brown-black pigment) production toward phaeomelanin (yellow-red pigment), resulting in a lighter, more even skin tone over time

et al., 2012

If its for humans, you can figure out the glutathione dog dosage by assuming its for a 150-lb person and adjust for your dogs weight
