If you are thinking about using tadalafil please discuss it with your doctor. Will Cialis be prescription or OTC over-the-counter? Be sure to mention any of the following: alpha blockers such as alfuzosin Uroxatral , doxazosin Cardura , dutasteride Avodart, in Jalyn , prazosin Minipress , silodosin Rapaflo , tamsulosin Flomax, in Jalyn , and terazosin; amiodarone Cordarone, Pacerone ; certain antifungals such as fluconazole Diflucan , griseofulvin Grifulvin, Gris-PEG , itraconazole Onmel, Sporanox , ketoconazole Extina, Ketozole, Nizoral, Xolegel , and voriconazole Vfend ; aprepitant Emend ; bosentan Tracleer ; carbamazepine Carbatrol, Epitol, Tegretol, Teril, others ; clarithromycin Biaxin, in Prevpac ; diltiazem Cardizem, Cartia,Tiazac, others ; efavirenz Sustiva, in Atripla ; erythromycin E. You could get dizzy, faint or have a heart attack or stroke. Follow your doctor’s directions carefully, and ask your doctor or pharmacist to explain any part you do not understand.Get started. About Cialis. Is Cialis approved for ED? Yes. Cialis is approved by the FDA to treat erectile dysfunction (ED). Our medical team can prescribe Cialis 5mg, 10mg, and . Viagra, Cialis, Levitra, and Stendra are oral medications for treating erectile dysfunction. No generic version is available for sale yet. 10 mg, 20 mg: 5 mg, 10 mg, 20 mg: 50 mg, mg. Cialis (branded Tadalafil) Cialis is a reliable, branded ED treatment that lasts up to 36hrs. Can be taken with food. Works in 30mins, lasts up to 36hrs. Works for 80% of men. 10mg 20mg. 4 tablets. Out of stock. 8 tablets.