Super Tadalis SX is marketed as a combination medicine for erectile dysfunction (ED) and premature ejaculation (PE). Products sold under this name commonly contain tadalafil and dapoxetine, although the exact formulation and strength can vary by manufacturer and market. Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor. It increases blood flow to the penis during sexual stimulation and can help achieve and maintain an erection. Dapoxetine affects serotonin signaling in the nervous system and is used in some countries to help delay ejaculation.