Tadalista 40 mg is marketed as a tadalafil product for erectile dysfunction (ED). Tadalafil improves blood flow to the penis and helps men achieve and maintain an erection when sexually stimulated. Tadalista 40 mg has positive-sounding online reviews, but these are not reliable proof that this higher dose improves ED more effectively. Tadalafil is evidence-based for ED at recommended doses, while 40 mg is not a standard ED dose. Discuss persistent erection problems with a doctor before increasing your dose.