Viagra (sildenafil citrate), Cialis, and Levitra all are erectile enhancers because they are phosphodiesterase inhibitors. Butea superba, too, is a phosphodiesterase inhibitor, as has been established in a complicated scientific study that analysed two biochemical compounds of an extract of 72 grams, obtained from 16 kilograms of root.

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Butea superba not only improves libido and sexual function, but also has a potential as a smart drug. The following scientific paper established that butea superba improves cognitive capabilities in rats.

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