Has anyone tried NAC?

We decided yesterday that what my son is calling anxiety is probably actually akathisia. He only has it when he's taking an antipsychotic, and when he describes the physical sensations to me, it doesn't sound like anxiety.

I found a study that showed NAC can help for akathisia, so we bought some yesterday and we're giving it a try. Any other ideas on how to deal with akathisia?

He hates this sensation worse than anything. The pdoc is in the process of lowering the dosage, but I'm worried that my son will stop the med altogether and suddenly. I don't want him to have a rebound psychosis.

We have an appt with his pdoc on July 2.