Drugs can be variously classified by their chemistry and/or by their effects. It's worth noting that GABA-A receptors have multiple allosteric sites, and differ

Drugs can be variously classified by their chemistry and/or by their effects. It's worth noting that GABA-A receptors have multiple allosteric sites, and different chemical classes of PAMs (positive allosteric modulators) may have differences in effects. (There certainly seems to be substantial overlap in effects, of course.)