Paul:
The LDN should be taken in amounts that leave your body quickly. When I started, I found that I needed to back off to .2 mg, and take it every other day to allow my system to clear itself.
As you take it, you will build up a tolerance, and be able to handle larger doses. After more than a year, I am able to tolerate only 2 mg a day. That is enough to help me a great deal, so I will stay at that dose for a while.
It seems that the side effects are different for different people. I suffered from headaches and a more tired feeling when I started. By backing off to a .2 mg dose and increasing every two weeks or so, I was able to develop a tolerance without any side effects.
John