What special precautions should I follow? However, it stays in your body for up to 36 hours and can be taken every 24 hours, so it can work for you constantly. What should I talk to my doctor about when considering if Cialis is right for me? You can report an adverse event either online, by regular mail or by fax, using the contact information at the bottom of this page. Tadalafil is in a class of medications called phosphodiesterase PDE inhibitors. Both medications are generic now and can be found at discounted rates, making them more accessible to the public than ever before. An inherited eye disease that affects the retina.Compare prices and print coupons for Cialis (Tadalafil (Cialis)) and other drugs at CVS, Walgreens, and other pharmacies. Prices start at $ CIALIS is indicated for the treatment of ED and the signs and symptoms of BPH (ED/BPH). Limitation of Use If CIALIS is used with finasteride to initiate BPH treatment, such use is recommended for up to 26 weeks because the incremental benefit of CIALIS decreases from 4 weeks until 26 weeks, and the incremental benefit of CIALIS beyond. WALGREENS. Use this coupon to get this price at any WALGREENS Pharmacy location. Expand to see all locations within your area. For information regarding participating pharmacies located within a medical facility, please contact customer care at .