Italian Stallion-120 Tablets Italian Stallion-120 contains Sildenafil Citrate, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). During sexual stimulation, nitric oxide (NO) is released in the corpus cavernosum, stimulating guanylate cyclase and increasing intracellular levels of cGMP. Sildenafil selectively inhibits PDE5, preventing the enzymatic degradation of cGMP in the vascular smooth muscle of the penis and facilitating sustained cGMP accumulation. Increased cGMP levels induce smooth muscle relaxation and arterial vasodilation within the erectile tissue, enhancing blood flow to the corpus cavernosum and enabling a firm, natural erectile response. Italian Stallion-120 is indicated for the treatment of erectile dysfunction (ED) in adult males requiring an elevated dose.