i have never heard of a mg that low, i had some 750's a while ago which made me feel pretty damn itchy
hydros dont do shit for me... i was on 7.5's for severely rolling my ankle.. and i would pop 6-8 of them and i got nothing..
Eat it, chew it up if you can take the taste. I can't phathom that you'd see any benefit what so ever from snorting it.