*p=0.01 for achiral vs. racemic/non-racemic mixture
drugs. †p=0.04 for racemic/non-racemic mixture vs.
pure enantiomers. ‡p=0.01 and p=0.03 for pure
enantiomers vs. achiral and racemic/non-racemic mixture drugs,
respectively. A, Alimentary tract and metabolism; B, Blood and
blood forming organs; C, Cardiovascular system; D, Dermatological; G,
Genitourinary system and sex hormones; J, Anti-infectives for systemic
use; L, Antineoplastic and immunomodulating agents; M, Musculoskeletal
system; N, Nervous system; P, Antiparasitic products, insecticides and
repellents; R, Respiratory system; S, Sensory organs; V, Various.
Miscellaneous denotes drugs with multiple or undefined ATC codes.