Patients should seek prompt medical attention if their erection lasts longer than four hours. Tadalafil treats PAH by relaxing the blood vessels in the lungs to allow blood to flow more easily. Always discuss with your health care practitioner ALL of the medications you are taking prescription and over-the-counter that way, you can receive the best advice for your own situation. It can also interact with many medicines, particularly nitrates used in some types of heart disease and blood pressure medicines. If you experience chest pain, dizziness, or nausea during sexual activity, call your doctor immediately or get emergency medical treatment, and avoid sexual activity until your doctor tells you otherwise. You need a prescription from a doctor to buy tadalafil.Brand names for tadalafil include Cialis. The cost for tadalafil oral tablet 5 mg is around $27 for a supply of 90 tablets, depending on the pharmacy you visit. Quoted prices are for cash-paying customers and are not valid with insurance plans. 30 (2 x 15 each) $ $ $ $ $ $1, Cialis: A prescription of 30 Cialis pills costs $ Tadalafil: 30 tadalafil pills are available for $ PlushCare also works with several health insurance providers. Introduction If you’re looking at treatment options for erectile dysfunction (ED), you may want to learn more about Cialis and its cost. It’s a prescription drug used to treat symptoms of .