Silvitra 120 is a medication that's typically used to treat erectile dysfunction (ED). It combines two active ingredients: sildenafil (which is also found in Viagra) and vardenafil (found in Levitra). Both of these drugs are phosphodiesterase type 5 (PDE5) inhibitors, and they work by increasing blood flow to the penis, helping to achieve and maintain an erection in response to sexual stimulation.