Refills: See if you can set up automatic refills or order as needed. There are many safe, reliable online services offering ED prescriptions. The mechanism of action for ED pills is simple: They inhibit the PDE5 enzyme which regulates the signals responsible for the smooth muscle tissue. The cascade of positive emotions that ensue plays a pivotal role in reducing stress and anxiety. Conclusion Navigating the vast ocean of medical treatments can be daunting. Cialis, known by its scientific name ‘Tadalafil’, is a medication commonly known for treating erectile dysfunction ED and symptoms of benign prostatic hyperplasia BPH. You should also call your insurance company to see if they cover erectile dysfunction medications.Cialis is a PDE5 inhibitor, a drug designed to treat erectile dysfunction (ED). It is a selective inhibitor of cyclic monosphosphate (cGMP)-specific phosphodiesterase type 5. Cialis was approved by the FDA in It’s generic name is Tadalafil and is recommended as an “as needed” medication. It is among the five FDA approved drugs that can be. Best Low Cost: GoodRx Fastest Delivery: Blink Health: Sesame Sign Up Now Key Specs Cost: Consultation prices vary based on the prescriber; $5 generic prescriptions Medical . Cialis is available only by prescription. It’s not available over the counter.