I had never heard of it and looked it up. You have to be very careful with supplements — kids with ADHD and autism seem to have more genetic abnormalities that cause side effects with medications and supplements. For instance, my son has the MTHFR polymorphism. So, folic acid and unmethylated B6 and B12 cause significant negative mood reactions. This supplement looks like it has all the methylated versions, so that leads me to believe this company probably has more knowledge about ADHD, autism, etc. My son takes several of the ingredients in this blend individually.
You should always talk with your doctor before giving supplements — they are not regulated like medications and there are some possible negative interactions.
ADDitude Community Moderator, Author & Mentor on Parenting ADHD, Mom to teen w/ ADHD, LDs, and autism