The non sedative antithistamines are all except one
High-Yield Explanation
HIGHLY SEDATIVEDiphenhydrarrineDimenhydrinatePromethazineHydroxyzine MODERATELY SEDATIVE PheniramineCyproheptadineMeclizineCinnarizine MILD SEDATIVEChlorpheniramineDexchlorpheniramineTriprolidineClemastine SECOND GENERATION ANTIHISTAMICSFexofenadineLoratadineDesloratadineCetirizineLevocetirizineAzelastineMizolastineEbastineRupatadine All 1st generation drugs are more sedating than 2nd generation drugs REF:ESSENTIALS OF MEDICAL PHARMACOLOGY;KD TRIPATHI 8TH EDITION