Yeah hubby takes niacin. Just had never heard of it being used for ODD, ADHD, and Bipolar.
I didn’t either until 2 months ago. I take 2000-3000mg per day. I take the flushing kind. I take it a few times a day,. For something behavioral you definitely divide it into three or more doses. Even six doses so you take 6 x 500mg to give you a total of 3000mg (3 grams) per day. The idea is to maintain a constant niacin blood level for the child (or adult)....at least to get over the hump.
People get scared off by the niacin flush so you have to tell them exactly what to expect and what is going on. The flush gets less if consumed with food at the end of a meal as Hoffer said to do. Also gets less as you go along