1) Causing convulsions 2) Convulsive 
A convulsant is a drug which induces convulsions and/or epileptic seizures, the opposite of an anticonvulsant. These drugs generally act as stimulants at low doses, but are not used for this purpose due to the risk of convulsions and consequent excitotoxicity. Most convulsants are antagonists (or inverse agonists) at either the GABAA or glycine re...
A substance that produces convulsions. ... See: eclamptogenic, epileptogenic. ... (05 Mar 2000) ... 
Type: Term Pronunciation: kon-vŭl′sant Definitions: 1. A substance that produces convulsions.
causing convulsions; convulsive.