pde inhibitor drugs

Anyone try this stack? They promote it as a pre-workout and for cognitive enhancement: https://www.maximustribe.com/science/workout-enhancement#drug-facts

Wondering does insurance pay for any of the PDE inhibitor drugs these days like Cialis or Levitra? I been getting them online for years but never bothered to get a script for them wondering if its even worth the effort to ask my doctor to write me one ?