|Test Items||Specification||Test Results|
|Description||White or almost white crystalline powder||White crystalline powder|
|Loss of drying||≤1.0%||0.5%|
|TLC||Only one spot||Only one spot|
|Conclusion||It complies with the USP 32.|
Patients taking are usually started on a 10 mg dose, which they take no more than once daily, about one hour before sexual activity. It can take as little as 30 minutes for to work in some patients. Like with Viagra, dosages are adjusted depending on a person’s reaction, with doctors generally decreasing doses to to 2.5 mg or increasing them to no more than 20 mg once a day.
Vardenafil, as with all PDE5 inhibitors, should not be used by men taking nitrate medications, because combining them with Vardenafil might provoke potentially life-threatening hypotension (low blood pressure).