Welcome to Sildenafil 4 UK Our online pharmacy is an established seller of UK licensed erectile dysfunction (ED) medications. We supply medications to a large number of customers in the UK and Europe. The demand for licensed medication is increasing as ED is a highly prevalent condition that is often left untreated. Studies have found that men with ED often believe their doctor will dismiss sexual concerns as unimportant. They may also feel embarrassed or simply do not think there is effective treatment available.