中文名称:他达那非Functions: The average of effective time is 16 minutes. The plasma concentration can reach peak after two hours, the is 18~. Even is five days, the purity of can be tested in blood. The clinical report shows that it can be up to 83% after  the dosage is 10-The main advantages are little side-effect, lasting for a long time and working strongly in two or three days

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