I'm not sure but I think my ADHD actually makes my Stutter even worse. I'm a total mess, can't keep focus for more than 20 seconds straight in conversation and when it comes to schoolwork forget about it. I have stopped taking my medication for ADHD because while it does help immensely with my ADHD, it makes me Stutter worse by tenfold. Meditation has helped somewhat. I take my Vitamins daily ( Vitamin D3/ Bacopa Extract/ Zinc / Fish Oil / Magnesium / Vitamin B6 / Vitamin B1 / Ashwaganda and Vitamin E). I'm depressed. Not because of my lack of seratonin or having depression but because of my Stutter. If you offered me $1 million dollars or to be 100% fluent I would take the fluency. Thank you for the support .