Eriacta 100 contains sildenafil citrate, which works by inhibiting the enzyme phosphodiesterase type 5 (PDE5). By doing so, it increases the levels of cyclic guanosine monophosphate (cGMP), a chemical that relaxes smooth muscles in the blood vessels of the penis. This relaxation allows for increased blood flow into the penile tissues, resulting in an erection when the man is sexually aroused. https://www.flatmeds.com/product/eriacta-100-mg/