Sildalist Strong 140 mg is marketed as a treatment for erectile dysfunction (ED). Products sold under the Sildalist name commonly contain a combination of sildenafil and tadalafil, two PDE5 inhibitors. However, formulations can vary by manufacturer, so the exact active ingredients and strengths should be verified on the packaging. Both medicines work by increasing blood flow to the penis during sexual stimulation, helping achieve and maintain an erection. They do not directly increase sexual desire and do not normally cause an erection without stimulation.