If the name on your prescription matches your ID and the prescription is in its correct container, I can't imagine having a problem. But if there is additional concern I imagine you could ask the FFS surgeon for a letter confirming this prescription is medically required for your return home.
For GCS, my post-op kit included a set of dilators and a letter from the surgeon explaining these are medically necessary - in case airport security doesn't like the way they look. I was surprised to see the letter. News headline: confused passenger pretends dilator is a samurai sword.