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Botanical treatments have been used by persons with epilepsy, especially for convulsive seizures, dating from 6000 BC in India , from 3000 BC in China and in Peru, and for centuries in Africa and South America. In traditional Western medicine, botanical treatments were widely used to treat seizures before the advent of compounds such as bromide and phenobarbital. For instance, Gowers documented his use of Cannabis indica (see also section on Cannabis and its Derivatives) and digitalis, the latter derived from the Foxglove plant (Digitalis purpurea) .