The erectile dysfunction treatment you use largely depends on your lifestyle and preferences. Although all the erectile dysfunction tablets we offer encourage stronger erections, each ED treatment works in a slightly different way - giving you the freedom to find a treatment that suits you best. Sildenafil and Viagra Connect: if you have a more spontaneous sex life, sildenafil or Viagra Connect may be the best erectile dysfunction treatment options for you as these can be taken on an as-and-when basis. They both take around one hour to kick in and can last for up to four hours. Tadalafil: tadalafil takes about 30 minutes to kick in and lasts for up to 36 hours. This is ideal if you prefer having a more flexible ED treatment that allows you to experience harder erections for a longer period of time (for example, over the course of a weekend). Tadalafil Daily: if you don’t like planning when to take an ED treatment before sex, Tadalafil Daily keeps you topped up with a steady level of tadalafil in your system every day so you can get erections whenever you need them. It takes three to five days to take effect, but once it does its effects are continuous.