Description: Cialis (Tadalafil Hcl) is for the treatment of Erectile Dysfunction.Cialis is available in 10mg and 20mg tablets and should be taken orally 30 minutes to 1 hour before sexual activity. Effectiveness may onset in 15 to 30 minutes and can last as long as 36 hours for one dose, facilitating spontaneity. No more than one tablet should be taken in a single 24-hour period. You can buy Cialis online from the above order links for overnight delivery in the US, the UK and Europe.