Cialis and Viagra are equally effective. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help. Sildenafil works on the PDE5 enzyme in the lungs to relax the blood vessels. How long does it take for Cialis to peak? Healthcare providers have experience talking about ED and providing treatment options without any judgment or shame. Using a prefilled syringe, you inject it just under the skin in the abdomen or thigh as needed, at least 45 minutes before sexual activity. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices.Find patient medical information for Viagra oral on MD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. if you are over 50, US residents. Buy online with free shipping. Home Delivery with GoodRx. Free shipping $ most people start with Viagra which also tends to be cheaper. Cialis lasts longer and can also be taken daily at a low dose for regular use. please call or email us at or ada@test1.ru so that we can provide you with the services you require. Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. VIAGRA may affect the way other medicines work, and other medicines may affect the way VIAGRA works, causing side effects. Especially tell your healthcare provider if you take any of the following.