its poisonous at high levels!
from wikipedia:
In low doses, nutmeg produces no noticeable physiological or neurological response. Large doses of 60 g (~12 teaspoons) or more are dangerous, potentially inducing convulsions, palpitations, nausea, eventual dehydration, and generalized body pain[1] In amounts of 10-40 g (~2-8 teaspoons) it is a mild to medium hallucinogen, producing visual distortions and a distinct euphoria. Nutmeg contains myristicin, a weak monoamine oxidase inhibitor.
Speculative comparisons between the effects of nutmeg intoxication and MDMA have been made.[2] However, nutmeg contains no amphetamine derivatives nor are any formed in the body from the main chemical components of nutmeg.[3] Use of nutmeg as a recreational drug is unpopular due to its unpleasant taste and its side effects, including dizziness, flushes, dry mouth, accelerated heartbeat, temporary constipation, difficulty in urination, nausea, and panic. A user will not experience a peak until approximately six hours after ingestion, and effects can linger for up to three days afterwards.
A risk in any large-quantity (over 25 g, ~5 teaspoons) ingestion of nutmeg is the onset of 'nutmeg poisoning', an acute psychiatric disorder marked by thought disorder, a sense of impending doom/death, and agitation. Some cases have resulted in hospitalization.
Intravenous injection of nutmeg is extremely dangerous and can be fatal.[4]
http://en.wikipedia.org/wiki/Nutmeg#...y_and_Toxicity