Patients should take the Avaforce tablet 30 minutes before sexual activity. It is important to remember that the tablet only works if you have a sexual stimulus that can stimulate an erection. It does not provide a complete boost for an erection. Avaforce should be taken 30 minutes before sexual activity, and it should not be taken more than once every 24 hours. It is important to take the Avaforce tablet before a sexual activity to achieve a permanent erection.