Effects of a Proprietary Standardized <i>Orthosiphon stamineus</i> Ethanolic Leaf Extract on Enhancing Memory in Sprague Dawley Rats Possibly via Blockade of Adenosine A<sub><b>2A</b></sub> Receptors

<div>HPLC chromatograms of reference standard compounds. The identified peaks are ombuin (3,3′,5-trihydroxy-4′,7-dimethoxyflavone), 3′-hydroxy-4′,5,6,7-tetramethoxyflavone, sinensetin, orthosiphol B, orthosiphol A, staminol A, and orthosiphonone A.</div>

Evidence-Based Complementary and Alternative Medicine

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Figure 2

Figure 2: Effects of a Proprietary Standardized <i>Orthosiphon stamineus</i> Ethanolic Leaf Extract on Enhancing Memory in Sprague Dawley Rats Possibly via Blockade of Adenosine A<sub><b>2A</b></sub> Receptors 

Figure 2 | Effects of a Proprietary Standardized Orthosiphon stamineus Ethanolic Leaf Extract on Enhancing Memory in Sprague Dawley Rats Possibly via Blockade of Adenosine A2A Receptors 