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Although Cialis and Viagra are both PDE5 inhibitors that boost nitric oxide in your body to help with ED, they’re different medications. Also, your doctor can check in with you if you start to experience any side effects from using Viagra or a similar ED medication. Several factors can cause short-term erection issues, from anxiety and stress to just simply not being aroused or interested in a sexual encounter. Online ED treatment companies, like Roman, Hims, RexMD, and Lemonaid, all offer ED medication (brand name and generic) even without insurance. If you’re on a tighter budget, it’s also worth considering generic versions of Viagra and Cialis. They can be just as effective at treating ED and are available at a fraction of the cost.

When the two are taken together, it causes extremely low blood pressure and sometimes death. Saving money is the main reason to choose generic tadalafil over name-brand Cialis. Both options have the same ingredients and give the same results, but one Cialis pill costs nearly 12 times more than one generic tadalafil tablet. Plus, some health insurance plans only cover generic prescriptions. Other PDE5 inhibitors—sildenafil (Viagra), vardenafil (Levitra or Staxyn), and avanafil (Stendra)—also make it easier to get and maintain an erection but come with unique side effects. The main difference is their effects wear off sooner compared to tadalafil.

When PDE5 is blocked, cGMP levels increase, leading to the relaxation of smooth muscle cells in blood vessels. This increases blood flow, which can help treat conditions like erectile dysfunction and pulmonary hypertension. PDE5 inhibitors improve symptoms of erectile dysfunction (ED) by preventing the breakdown of a substance called cyclic GMP (cGMP). CGMP acts as a vasodilator, which means it relaxes smooth muscle and widens blood vessels allowing more blood flow into tissue. This also increases blood flow into the corpus cavernosum