Stendra avanafil : This is an as-needed medication taken 30 minutes before sex and can last up to six hours. According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety. Cialis tadalafil : This ED medication works with the same principle as Viagra, but lasts up to 36 hours. All PDE5 inhibitors, including Viagra and Cialis, require a valid prescription regardless of the pharmacy or provider. Yes, ED pills can cause side effects. Make sure to get an estimate of when you can expect your prescription in the mail.Tadalafil Generic for Cialis®. The same active ingredient as Cialis at 10% of the cost. Tadalafil is a generic erectile dysfunction medication that’s FDA approved and clinically proven to help men with ED get and maintain erections. Getting hard just got simple. TADALAFIL (Generic for CIALIS) QTY 30 • 5 MG • Tablet • Near EDIT; Add to Medicine Chest; Set Price Alert; More Ways to Save; TADALAFIL/Cialis (tah DA la fil) treats erectile dysfunction (ED). It works by increasing blood flow to the penis, which helps to maintain an erection. It may also be used to treat symptoms of an enlarged. Cialis is Food and Drug Administration (FDA) approved to treat erectile dysfunction (ED) and benign prostatic hyperplasia (BHP). Generic tadalafil became more widely available after