In such circumstances, nitrates should still only be administered under close medical supervision with appropriate hemodynamic monitoring. Hypersensitivity reactions have been reported, including Stevens-Johnson syndrome and exfoliative dermatitis [see Adverse Reactions 6. By controlling the enzyme, tadalafil helps to maintain an erection after the penis is stroked by increasing blood flow to the penis. Your health information should remain between your provider and yourself. The most common symptoms of erectile dysfunction include difficulty achieving or maintaining an erection and reduced sexual desire. Cialis Daily tadalafil : This low-dose Cialis works by increasing blood flow to the penis over time, making it easier to have an erection when aroused. CIALIS should be used with caution in patients who have conditions that might predispose them to priapism such as sickle cell anemia, multiple myeloma, or leukemia , or in patients with anatomical deformation of the penis such as angulation, cavernosal fibrosis, or Peyronie’s disease.Dosage forms: TAB: mg, 5 mg, 10 mg, 20 mg. erectile dysfxn [prn dosing regimen] Dose: mg PO x1; Start: 10 mg PO x1; Max: 20 mg/dose up to 1 dose/24h; Info: give before sexual activity; effects may last 36h [daily dosing regimen] Dose: mg PO qd; Start: mg PO qd; Max: 5 mg/day; Info: give without regard to sexual activity BPH.  · What is Cialis? Cialis is a brand-name prescription medication. It’s FDA-approved to treat the following in males:* erectile dysfunction (ED), a condition in which you can’t get or keep an. Brand-name Cialis: $20 – $80 per dose (5mg, 10mg, 20mg) Generic Cialis (tadalafil): $11 – $44 per dose (5mg, 10mg, 20mg) Daily generic Cialis (tadalafil): $8 per dose.