Cenforce D Extra Power is marketed online as a treatment for erectile dysfunction (ED) and premature ejaculation (PE). Products sold under similar names may contain sildenafil and dapoxetine, but you should verify the exact ingredients and strengths on the packaging. If the product contains sildenafil, never combine it with nitrate medicines such as nitroglycerin. If it contains dapoxetine, it may interact with antidepressants and other medicines affecting serotonin. Combining ingredients without medical supervision can increase the risk of adverse effects.