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QQ20180531101300.png Vardenafil is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Vardenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. It works by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection. Vardenafil does not cure erectile dysfunction or increase sexual desire. Functions 10.jpg Compared with sildenafil ( Viagra ) , it has the following advantages: 1 with less, just 20mg ( Sildenafil need 120 mg-150mg). 2 fast onset time , within 15-30 minutes of effective. 3 side effects, but individual differences , there is still less than 2% of people will somewhat mild headache . Analysis 5.jpg Test Items Specifications Result Description White or almost white crystalline powder White crystalline powder Melting point 191.0~193.0 ℃ 192 ℃ Loss on drying ≤1.0% 0.5% Heavy Metal ≤20ppm 15ppm TLC Only one spot Only one spot Assay ≥99.5% 99.93% Conclusion It complies with the USP32 Real Shot 4.jpg 1.png Packaging & Shipping QQ20180531232857.png