To try and gain a fuller extraction I tried doing the nutmeg-milk extraction.  Success!  Not surprising; the fat in the milk probably extracted much more from the nutmeg.  However with the milk extraction I did get some gastric pain.  The effects were much longer, lasting about 35 hours.

So I may agree with powerfulmedicine that avoiding trimyristin would be very beneficial.  But now I wonder - what compounds in nutmeg are water soluble?  Perhaps one of them helps activate the volatile fraction.