Ask your doctor if you are not sure whether any of your medications contain nitrates. Benign prostatic hypertrophy is a condition in which the prostate gland becomes enlarged, obstructing the free flow of urine. Which Lasts Longer? This leads to shortness of breath when exercising or completing regular daily activities. Because they are the same class of medications, they have similar side effects and effectiveness. However, the dosage can range from 25— mg.Cialis (tadalafil) is a type of PDE5 inhibitor that the Food and Drug Administration approved in Like other PDE5 inhibitors, it increases blood flow to the penis. There are two different ways to take Cialis: as needed or daily. Cialis (tadalafil) is a moderately priced drug used to treat erection problems in men. It may also be used to treat the enlargement of the prostate gland. This drug is slightly more popular than comparable drugs. It is available in both brand and generic versions. AdComplete the Online Consultation with our Doctor. Personalize Your Needs. If Appropriate, Get a Prescription for ED from RexMD®. Free Shipping AvailableFree Shipping · Discreet Packaging · Real Doctors · Personalized PlanServices: Telehealth, Telemedicine, Privacy Policy and more.