Calabar beans

Calabar beans

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Caption: Calabar beans. Calabar beans (Physostigma venenosum) in their pods. These beans are the source of the drug physostigmine. This is used in the treatment of glaucoma, where a preparation is dropped directly onto the eyeball. It also acts as a muscle relaxant, and has been used to treat epilepsy, tetanus and constipation. Overdoses of physostigmine can be fatal.

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Keywords: botany, calabar beans, constipation, epilepsy, eye-drops, glaucoma, herbal medicine, lockjaw, medicinal plant, muscle relaxant, nature, physostigma venenosum, physostigmine, plant, plants, pods, remedy, source, tetanus, treatment

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