Sildenafil vs tadalafil: which should I ask for and which service offers both?

If you want the most flexibility and longer duration, ask for tadalafil; if you want a shorter-acting, often slightly cheaper, more “as-needed” option, ask for sildenafil.[4][6][8] Both are effective for erectile dysfunction, and head-to-head studies generally show similar efficacy, with many men preferring tadalafil because it lasts longer.[3][5][12]

• Ask for tadalafil if you want:

  • a longer window of effect, up to 36 hours[1][4][7]
  • less need to time sex precisely[4][6][8]
  • the option of daily low-dose treatment[4][6][9]

• Ask for sildenafil if you want:

  • a shorter duration, usually about 4 to 6 hours[1][4][6]
  • a more traditional take-it-before-sex medication[4][6]
  • possibly a slightly cheaper generic in some services[4][6]

For a service that offers both, LloydsPharmacy Online Doctor explicitly says you can request both sildenafil and tadalafil through its service.[7] Asda Online Doctor also compares both and offers guidance on choosing between them.[4]

If you want, I can also help you decide based on your situation, like planned vs spontaneous sex, cost, daily use, or side-effect sensitivity.