Pterosin A is an orally active anti-diabetic agent. Pterosin A promotes glucose uptake, increases serum insulin, and improves hyperglycemia and glucose intolerance in diabetic mice. Pterosin A can be isolated from Pteridium aquilinum.
References:
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[2]. Chen CY, et al. Chemical constituents analysis and antidiabetic activity validation of four fern species from Taiwan. Int J Mol Sci. 2015 Jan 22;16(2):2497-516.