Cialis: It is available as Cialis 5 mg, 10 mg, and 20 mg tablets. The recommendation is begin with initial dose of 10 mg tablet and later on reduce or increase the dose viewing results obtained. Cialis tablets are to be taken ranging from 30 minutes to 12 hours before sexual activity. Cialis is soft tab and gets absorbed quickly, it is not required to be digested, before the levels in blood can be noticed it is effective after 15 minutes of ingestion.
Levitra: It is available as Levitra 10 mg, 2.5-mg, 5-mg, and 20-mg. For majority of the persons the start up is at 10 mg pill and dose to be adjusted according to reponse and tolerance. It should be taken 25 minutes to 1 hour before and one can indulge in sex within 15 minutes.