In the United States, sildenafil ... allows for over-the-counter (OTC) sales of the drug, in part to discourage the market of making fake sildenafil. Viagra and other ED medications are some ...

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, DHEA is sold as a supplement ... and active greatly will increase your response to drugs like Cialis and Viagra. Over-the-counter supplements and herbal remedies for erectile ...