Everyone is different. I have trouble taking the B vitamins. What I do take is by Solgar. It is called sublingual Liquid B-12 with B complex. For example, it only has 10 mg of Vitamin B6, but that is way more than you need. They say that it is 500% of your daily value.

Anyway, the liquid, sublingual B complex is the only one that I have found that I can take.

I hope that you find something that will work for your son.

ShellyK