i asked this a while back but never got any info. just wondering if it would be alright to cut/add a ml of b12 with a ml of sust in order to help with the prolonged injection pain. i've read that i shouldn't mix oil and water based a.s. in the same tube. b12 is water soluble and the sust is oils, even though the brand i'm using seems pretty thin, it's still oil based. is it o.k. to do? i'm a bit confused. thanks.