Anybody tried "Oxiracetam" for their stutter?

Anybody tried "Oxiracetam" for their stutter? It's a nootropic that's known to improve speech fluency, it's a legal nootropic part of the racetam family which is relatively new in the "smart drug" world and not much defined research has been done on them although they are known to be safe. If anybody has tried Oxiracetam or any other nootropic did you notice any improvement in verbal fluency?