Any marathon, long distance runners take LDN? Has it affected you?

I’m been put on LDN for SIBO. I’ve been taking it for a month and am currently at 4.5mg a night before bed. I’m wondering if there any long distance runners who take LDN and if it has affected them negatively or positively. Although I am able to still run long distance and it doesn’t seem to affect my times I feel sluggish and in a fog sometimes.

I have a marathon coming up and I’m wondering if I should stop taking it for that week.