The present invention relates to novel compounds that can act as antidotes for treating “Acute Cannabinoid Overdose” produced by classical cannabinoids such as Δ9-tetrahydrocannabinol (THC) and several synthetic psychoactive cannabinoids (SPCs). The cannabis constituent THC exerts its psychotropic effects via CB1 receptor activation and SPCs mimic the effects of THC with higher potency and severe neurotoxicity. Compounds disclosed in this invention, their enantiomers, diastereomers, geometric isomers, racemates, tautomers, rotamers, atropisomers, metabolites, N-oxides, salts, solvates, hydrates, isotopic variations and their polymorphic forms can be therapeutically useful in an emergency setting for counteracting the intoxicating effects of acute THC ingestion and SPC overdose. Also, aspects of the invention are concerned with pyrazoles, imidazoles, triazoles, thiazoles, oxazoles, dihydropyrazoles, pyrrolidinones, azetidines, oxyazetidines and azaspiro[3.3]heptanes with unique pharmacokinetic and pharmacodynamic properties for treating “Acute Cannabinoid Overdose”.