They have the same benefits and risks as their brand-name counterparts. 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. The most common symptoms of erectile dysfunction include difficulty achieving or maintaining an erection and reduced sexual desire. It’s available in 50 mg, mg, and mg tablets. An erection results from an increase in blood flow to the penis. This allows the smooth muscles in the penis to relax and fill with blood. According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety.Written by Benita Lee, MPH Updated on June 23, Key takeaways: Cialis (tadalafil) is a popular medication used to treat erectile dysfunction. It’s available in tablets ranging from . Find the best tadalafil or cialis prices near you now with our cost comparison tool and start saving today. tadalafil Used for Benign Prostatic Hyperplasia, Erectile Dysfunction erectile dysfunction (ED) benign prostatic hyperplasia, or BPH). Tadalafil (Cialis) is available both as brand .