But manufacturers offer coupons to make the drug affordable for the public consumer. The results showed the combination to be even more effective than either medication alone. When the blood vessel muscle cells relax, this expands the vessel and increases blood flow; this effect is referred to as vasodilation. The brand Cialis is used to treat men with erectile dysfunction and benign prostatic hyperplasia BPH. Size Pharmacies usually sell Tadalafil in boxes which contains ten to thirty tablets. BPH occurs when the prostate and the surrounding tissues become enlarged. With PAH, high blood pressure develops when a blockage in the arteries within the lung limits normal blood flow.Cialis lasts up to 36 hours in the body, while Viagra lasts 4–6 hours in the body. Both are taken 30 minutes before sex. Cialis can cause limb pain, while Viagra can cause vision change, rash. Updated on June 23, Key takeaways: Cialis (tadalafil) is a popular medication used to treat erectile dysfunction. It’s available in tablets ranging from mg to 20mg. It can . 20 mg The cost for these different strengths depends on whether you have insurance, your individual plan coverage, and your treatment plan. For example, Cialis for erectile .