Drug results: 3

picrotoxin A noncompetitive antagonist at GABA-A receptors and thus a convulsant. Picrotoxin blocks the GAMMA-AMINOBUTYRIC ACID-activated chloride ionophore. Although it is most often used as a research tool, it has been used as a CNS stimulant and an antidote in poisoning by CNS depressants, especially the barbiturates.
nefiracetam antagonizes amnestic effects of picrotoxin or bicuculline; structure given in first source
picrotin the less toxic component of picrotoxin lacking GABA activity

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