Viagra and sildenafil are effective treatment options for ED, but they both require a prescription. As a result, you cannot buy them over the counter (OTC) — they require a consultation with a ...

In the United States, sildenafil for erectile dysfunction or pulmonary hypertension requires a prescription. The United Kingdom allows for over-the-counter (OTC) sales of the drug, in part to ...

Sildenafil citrate and other PDE5 inhibitors like ... best results with as few side effects as possible. There’s no ...

Before taking sildenafil, tell your healthcare provider about any prescription or over-the-counter (OTC) medicines, vitamins/minerals, herbal products, and other supplements you are using.

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

The results of this study indicate that sildenafil was chemically and physically stable in two extemporaneously prepared oral suspensions over the 91 ... 25-mg sildenafil citrate tablets into ...