Viagra Tab 100mg Sildenafil Box 4’s is a medication formulated for men to help with the erectile dysfunction (ED) and maintain a firm and long-lasting erection during the intercourse activity. It contains a potent and effective ingredient that works by increasing the blood flow which results in improved erectile function. This product comes in a convenient box of 4 tablets that makes it easy to take on the go or store in your medicine cabinet or bag. The color of the tablets is blue, film-coated, and diamond-shaped so you to identify them easily if mixed in a pile of other tablets.