Speak to your primary care provider, a urologist or a licensed provider to get Cialis or any other prescription ED pills. The information contained herein is not a substitute for and should never be relied upon for professional medical advice. You’ll soon start receiving the latest Mayo Clinic health information you requested in your inbox. They may contain hidden active ingredients or simply not work. Always talk to your doctor about the risks and benefits of any treatment. This will increase the supply of blood to the lungs and reduce the workload of the heart. This is high blood pressure that occurs in the main artery that carries blood from the right side of the heart the ventricle to the lungs.Tadalafil is in a class of drugs called phosphodiesterase-5 (PDE5) inhibitors and is available in a generic form often called generic Cialis. Tadalafil has been on the . Tadalafil (Cialis) is available both as brand-name and generic tablets. Common side effects of this medication include headache and indigestion. Tadalafil . Both treatment options are available in doses of 5, 10, and 20 mg. The costs are: Cialis: A prescription of 30 Cialis pills costs $ Tadalafil: 30 tadalafil pills are .