Visnadine (or visnadin) is a natural

vasodilator Vasodilation is the widening of blood vessels. It results from relaxation of smooth muscle cells within the vessel walls, in particular in the large veins, large arteries, and smaller arterioles. The process is the opposite of vasoconstriction, ...

. It was first isolated from

bishop's weed Bishop's weed is a common name for several plants, all but one of which belong to the plant family Apiaceae. * ''Aegopodium podagraria'', which is an invasive perennial weed of temperate regions, known also in English as ground elder. * ''Ammi maju ...

(''Ammi visnaga''), a plant indigenous to the Mediterranean region which has been used for centuries in Egypt as a spasmolytic.

References

Lactones Vasodilators Pyranochromenes Acetate esters {{cardiovascular-drug-stub