Cialis® Together (tadalafil) is fast-acting and long-lasting medicine for erection difficulties. Ready in 30 min., and able to respond naturally for up to 36 hrs.How Quickly Does Cialis Work? The one exception may be with a specific class of blood pressure medication known as ‘alpha blockers’. Do not keep outdated medicine or medicine no longer needed. The amount of medicine that you take depends on the strength of the medicine. The study found no safety concerns. Yes, check the packaging your medication came in for the manufacturer expiration date. Talk to your pharmacist or doctor for further information.How Quickly It Works Cialis is a prescription drug that contains the active ingredient tadalafil. The Food and Drug Administration (FDA) approved its use in people . The effect of one tablet lasts for up to 36 hours. The recommended ‘as needed’ dose for Cialis is 10mg, taken prior to anticipated sexual activity. The dose may . Cialis® Together (tadalafil) is fast-acting and long-lasting medicine for erection difficulties. Ready in 30 min., and able to respond naturally for up to 36 hrs.Check with your doctor right away if you have a sudden decrease in hearing or loss of hearing, which may be accompanied by dizziness and ringing in the ears. Children—Use and dose must be determined by your doctor. Although not all of these side effects may occur, if they do occur they may need medical attention. Follow your doctor’s orders or the directions on the label. What will be the same for all unbranded Tadalafil pills is that they should each be equally as effective at treating ED. It does not have to be taken around the time of sexual activity.