In the ‘80s, researchers set out to test a medication called sildenafil citrate for treating high blood pressure and angina ...

Vardenafil typically starts working faster, around 15 to 30 minutes after ingestion, while sildenafil may take 30 to 60 ...

The results of this study indicate that sildenafil was chemically and physically stable in two extemporaneously prepared oral suspensions over the 91-day study period. The liquid preparations may ...