IIRC when I took it recreationally itwas many many grams to get to the hallucinations part. It was hard to stomach. Unless the safety profile is pretty narrow I'd say it would be difficult to complete suicide with nutmeg.
Sadly the hallucination effect does not correlate with the toxicity,especially the hepatotoxicity with nutmeg.. You can absolutely kill of your liver and die an agonizing death a few days later and have no hallucinations at all.