SLC6A2 and attention deficit-hyperactivity disorder: These included SCN5A, CHRM3, CHRM1, SLC6A2, HTR3A, ADRB2, DRD1, DRD2, KCNH2, HTR2A, etc. These targets had higher degree values in the Chinese medicine-active ingredient-target network, and hence may be potential active targets of LMQXM for ADHD.