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Abstract
Medicinal properties of mangiferin, amaroswerin and amarogentin from genus Swertia are well documented. Collection of S. chirayita is strictly prohibited due to critically endangered status. Therefore, new source of these medicinal compounds is necessary for regular supply in market to combat various diseases. To identify new source of mangiferin, amaroswerin and amarogentin several plant species were screened. S. alternifolia showed presence of C-glucoxanthone mangiferin along with bitter secoiridoid glucosides (amaroswerin and amarogentin). As S. chirayita had been banned for collection due to rarity in nature, S. alternifolia can be used as an alternate source of mangiferin, amaroswerin and amarogentin for medicinal use.