My mom was given the haldol shots in the hospital; they were very effective on hallucinations and very sedating in her case.

I don’t know how long they will keep him or how long the mania will last. I hope he responds well to his med regimen. You’ll need to be aware (if you aren’t already) that mania typically is followed by a crash down into depression.

On your Q about confirming diagnosis of BP 1–ask the psychiatrists what they think, or see if the nurses will tell you what they’ve put in his chart.