The strongest sildenafil tablet on the market for treating erectile dysfunction in men is known as Sildigra 250 mg. It operates by improving blood flow to the penile arteries, which subsequently aids in getting an erection. PDE5 inhibitors include Sildigra 250 MG in their class of medications. Sildenafil citrate is the sildigra 250's active element. They're blue and come in strips of ten.