Table 1.

Effect of LCAR supplementation at 1 g/day

	Without LCAR	With LCAR
Blood VPA (mg/L)	86.6	46.3
4-en VPA (mg/L)	3.6	0.7
4-en-VPA/VPA metabolic ratio	0.042	0.015
Ammonium (${\text{NH}}_4^{+}$) (µg/dL)	295	75
LCAR (µmol/L)	20.9	29.3
ACYLCAR/LCAR ratio	0.45	0.23

LCAR, L-carnitine; VPA, valproic acid; ACYLCAR/LCAR, acylcarnitine/L-carnitine