M.R.
Well, I don't know how long your tried treatment for your younger son, or what you tried, but you are doing both your children a disservice by tossing out standard medical care for a flesh and blood organ system becuase you don't like the idea of a problem with it. We don't have this attitude for the pulmunary system, the lymbic system, the cirularitory system, the urinary tract, the digestive system, etc, but we shun good solid medical care when something goes wrong with the brain. Somehow, we think brain health intervention is a DIY project.
It is quite common for issues to run in families. Genetically, neither of your children can help that they have molecular disfunction in their brains. Medication and therapy can help, but you must be willing to try different treatments. Treatment includes far more than medication, and medication should be a tool that you use to help all the rest of the multiple therapies be more effective. The first medication you try might not be the one, so you try again. Why we don't allow trial and error for brain disorder treatment is beyond me, but in almost no other aspect of life do we toss out the baby with the bath water so quickly. No one ever says that they are giving up on chemo therapy because they are tied of being a guinea pig, but we do that for our brains.
You can search all you want, and spend a fourtune on all kinds of stuff. There is no shortage of people who have the answer for you if you are willing to beleive. The placebo effect is powerful, and you may find your panacea for a little while. Untreated, your children will be miserable and their futures are bleak, and progressive disorders march on with permanant concequences.
I can tell you what I see as an advocate, many people leave standard care in thier search and have had such terrific results, they shun everything that sparks of the diagnosis, including educational intervention. The come back to standard care eventually. I have not ever met anyone who did it the other way. You don't want to know how much ground those kids lose in the classroom while they were "cured." I help them get the best educational services they can in the time they have left, but for many, it is just too late to be very effective. I see that side of the "alternative" craze.
OCD responds incredibly well to medical treatment. It is like night and day. ADHD is a more tricky medical problem, and if you did not have a good medical prescriber, then find a better board certified child psychiatrist to help your son. Some people can't tolerate medical therapy, but don't give up until you know for certain that your son is one of those people.
Finally, do some research. Check out the probable future for a child with untreated ADHD and OCD. You won't like it.
M.