Adding my account with CoQ10 and derivatives to this string.
I'm 30 years old, in great physical shape and overall health, and eat a very healthy diet of moderately high carb Paleo (because of how active I am in the gym).
I had been taking ubiquinol, ubiquinone and/or idebenone for more than 6 months. My dosages were 100mg, up to 300mg, max.
It was only recently that I made a correlation to CoQ10 for the following symptoms:
•Brain fog: Difficulty focusing. Looking at my computer / the work I had to do, and being somewhat puzzled. Not knowing what I should do next, unless I devoted a ton of energy towards focusing (not normal for me), at which point, I would quickly get distracted and lose track of what I should be doing, once again.
•Mental fatigue: After a few hours (I'd have my vitamins between 9am-11am each morning), I'd have to take a nap (12-3pm). The need was extreme – without it, I'd be wasting the day away, and have absolutely no chance of getting any work done. More often than not, I felt 60+% better after the nap. I also noticed that I could remedy the brain fog / mental fatigue by going to the gym. I would have to lift heavy or run intensely for more than 2 miles, before the symptoms were totally lifted.
•High blood glucose: I can't definitively attribute this to the CoQ10 yet, but after seeing some other posts in this thread, I think I can owe the following to it. I got a sleep study done, as a result of my 8-9 hours of sleep still requiring habitual naps (this was before I came to realize that it's probably CoQ10, which was relatively recent). During the time, I also got back to measuring my blood glucose. I had purchased the glucometer to measure my ketones while experimenting with a ketogenic diet for ~3 months. I noticed back then (I was taking CoQ10 at the time) that my fasting blood glucose (FBG) was 110-120; I attributed it to the notorious "physiological insulin resistance". When I got the sleep study done, I randomly decided to pick up the glucometer again, for the first time since keto; I noticed that my FBG was still 110+!. This concerned me, because I eat very "clean", and am extremely active in the gym. I had an endocrinologist run tests on me, and I made a point to not take any supplements for the three days leading up to it. My 12-hour FBG level? 70! Was it the CoQ10 causing the spike? I don't know for sure, but the only other supplements I was taking during the time (as well as during the ketosis period) were ThorneFX AM/PM, magnesium glycinate, zinc, PQQ, matcha green tea & astaxanthin. I'm currently still taking all of these, except for the ThorneFX multi, PQQ & CoQ10.
Assuming I have test strips, I'll run a few more FBG tests in the coming days, since I haven't been on ubiquinol/one/idebenone for 2 weeks now. Speaking of which, I haven't had to take any naps during these two weeks, for the first time in months!!
If it makes any difference, I seem to have similar reactions (brain fog, high blood glucose) to choline and cholinergics (CDP, inositol, UMP, etc.). Believe it or not, I actually suspect having too many eggs may even throw me off somewhat – but, I don't know for sure, since I've been hesitant to reintroduce eggs in a methodical fashion, in order to measure my reaction. Any connections, or totally off?
Also, as for my 23andMe profile, my rs6323 SNP is G.