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acetyl l carnitine holland and barrett L-Carnitine - 500mg 60 Tablets | Weight Management NOW Foods Acetyl-L Carnitine, Cognitive
Description
Buying online from a dedicated supplier is the more direct route

Zerr-Fouineau M

Acetyl-L-Carnitine - 750mg

A subsequent analysis suggested that NAC may benefit a subgroup of IPF patients with the TOLLIP rs3750920 TT genotype (Oldham et al., Am J Respir Crit Care Med, 2015) [46]

10.1021/jf802507j 63 WuW
If they don't, then you probably don't have an allergy but it doesn't hurt to run some tests anyway
