The chemical reactions and pathways resulting in the breakdown of carnitine (hydroxy-trimethyl aminobutyric acid), a compound that participates in the transfer of acyl groups across the inner mitochondrial membrane.
carnitine metabolic process, CoA-linked
ergothioneine catabolic process
glycine betaine catabolic process
N-alpha,N-alpha,N-alpha-trimethyl-L-histidine catabolic process