Perrigo is indicated in adult men with erectile dysfunction, which is the inability to achieve or maintain a penile erection sufficient for satisfactory sexual performance. Eropid contains Sildenafil, the same active ingredient as Viagra, and is a medication for erectile dysfunction that doesn\'t require a prescription. Eropid 50mg Tablets contain the active ingredient sildenafil, which belongs to a group of medicines called phosphodiesterase type 5 (PDE5) inhibitors and works by relaxing the blood vessels in your penis, allowing blood to flow into your penis when you get sexually excited and causing an erection. They will only help you to get an erection if you are sexually excited (stimulated). In order for Eropid to be effective, sexual stimulation is required.