Most "natural" options for adhd either don't work, or will help ANYONE -like good nutrition, or have FAR more side effects than medication does.
((Before I go on, I should probably mention I'm adhd-c, quasi-medicated (meaning I go the OTC route with caffeine and nicotine... but have tried most of the meds out there, and just don't like any of them enough / found my *magic wand* that lets me keep the gifts while getting rid of the annoying bits), and have a quasi-medicated adhd-c 8yo (caffeine via coffee or soda). I have no bias for or against adhd meds. They're a tool, and like any tool can be useful or not depending on the situation.))
People get all up in arms about adhd meds, for some very good reasons, but most of those reasons are looooooong out of date (from back when kids would be medicated into zombies, which does NOT happen... you know you have the *right* med when you're exactly as you are not on meds, but with a degree of control that was previously lacking. NO personality shifts allowed. Although it can seem that way if you're dealing with a child in constant tantrums who no longer has to fight the tantrums, and just gets to be themselves). No one gets up in arms about a diabetic taking insulin (instead of controlling their diabetes with diet, which isnt always possible) or looks down on them for it... no one gets up in arms about a patient prone to blood clotting taking coumadin... or a PPD mum taking antidepressants. Yet for some reason, people who have no experience with adhd, or any medical background, feel they have the right to decide that adhd meds should be made on moral grounds. It's baffling to me.
There are only 2 reasons we DON'T medicate our son. 1) It's not any kind of problem in our house (adhd house, he fits right in), and since we homeschool we have the luxury that we can structure our day so that it's the most optimal for him, bringing out the benefits of adhd instead of the negatives (NOTHING could be better designed to bring out the negatives of adhd than our current schooling system). And 2) Because I *am* adhd, I'd rather teach all the tedious coping mechanisms *first* (like emotional monitoring and regulation, sensory integration, fine muscle movement to avoid annoying others with large muscle movements and about 1000 other tips/ tricks/ and foundations) and then let him decide if, what, and how much he wants to medicate his adhd later, when he's more self aware and can have a better voice in the process. But that's based purely off of my having already done it for over 20 years.
In the meantime, like I said, we use caffeine. Our espresso machine is *golden*. While not as effective as meds, it takes the edge off. Which is just enough to get through anything boring.
Aside from caffeine... we also use a LOT of sensory things (like massage before bedtime, full body immersion in water -swimming, or baths- to calm the mind or body, LOTS of physical activity -since he's combined, like I am, he needs both mental stimulation AND physical stimulation to keep from going bonkers), LOTS of mental activity, just tons of things. All of which is in addition to those "things that help everyone", like good nutrition and sleep.
To research all the tips/ tricks/ foundations... the phrase you'd be looking for are "coping mechanisms". Of which, like I mentioned, there are thousands. Everything from playing music when you have to concentrate, to creating patterns so solid that you follow them without thinking about them, to using things like swimming in order to relax, to never touching a piece of mail twice (because the "I'll do that in a minute" actually gets translated to "It will *actually* get done the 3rd or 4th winter after hell freezes over"), to positive discipline instead of punishment (emotional regulation + figuring out what went wrong + what to do next time = solution based things working about a gazillion times better instead of guilt+shame), to gazillions and gazillions of others.
Here, as well, are my 2 favorite resources I like to hand out:
"You Mean I'm not Lazy Stupid or Crazy ?!?" by kate kelly & peggy ramundo