Hey I am still IVing the 2mg Dillies usually at least like 3-4 at a time. He hasn't exceeded 20mg's in a day "yet" but is curious what might be too much for him considering the above info. The reason for this post is that considering he uses all day every day his arms have become rather sore and noticable as well. So he is curious where else are good spots to IV so that his arms can get a breather for a couple of days, and if and where to tie off etc... He uses Bd Ultra-fine II insulin syringes. 1cc, 5/16" length, 31 gauge. Also is there any other good filters besides cotton readily available he has already gotten fevers from this. Tonite is also his first time bangin "H" he has snorted it quite a few times but never poked it. He has already IVed 7 1/2 2mg dillies today so he wont use to much "H" He is always paranoid he is going to OD. Anywho thanks in advance!!!