Over the Counter Meds

I am curious about over the counter ADHD meds...do you have an information or knowledge of otc vitamins or other treatments that ease the symptoms of ADHD?  Besides espresso, which I have about once or twice a week when I have to concentrate I have not tried anything.  I am frustrated with always being all over the place; especially in group or party settings, i feel less in control of my symptoms of impulsiveness and talkativeness and other things.  What have you done as a successful behavior modification?  Thank you for any support!