Robb Wolf recommends ALA, dinis. He says if you take it first thing in the morning, it does clear the mental fog.

He also says to take N-acetyl-L carnitine (NAC) with it. He says NAC can reduce some signs of aging and dementia. He suggests 600- 1,200 mg of NAC and 1,00-2,000 mg of ALA.

I take two of these every morning with my coffee. The feeling is tough to beat.

http://www.vitacost.com/NSI-Alpha-Lipoic-Acid-Acetyl-L-Carnitine-HCl-1600-mg-per-serving-240-Capsules

I'm more familiar with it for Ketosis (it lowers blood sugar so you go into Ketosis faster). Not so much so with glaucoma/mental fog. I know it crosses the blood/brain barrier and is a big anti-oxidant. There's some promising stuff in re. strokes with it (increasing survivability). Perhaps the mental fog thing is related.

By the way, from my recollection for Ketosis, there's 2 types of ALA's. R ALA and S ALA. In regular ALA supplements, it's roughly 50/50 contentwise. The R ALA is the beneficial one, the S ALA isn't. So it's better to get specific R ALA only supplements. Whether that applies for your glaucoma, I don't know.

My understanding is ALA increases the need for biotin. To help with control of blood sugar, I was taking 600 mg RALA/day for about a year. The brand I was taking was supposed to also contain biotin in the needed quantities. In addition I would also take some additional biotin just for good measure. I stopped taking it when I noticed that my hair was coming out in gobs and I started noticing considerable hair thinning in the area of my forehead and bangs. Really scared me. My hair has grown back but since then I am hesitant to take any supplements - just always eat a varied very low carb diet. And who really knows what is in some of these supplements and where they come from.

I read recently that taking too much(not sure what amount that would be) ALA can cause hypothyroid issues. It was on thei Mayo Clinic site and there was not much detail. It did make me think about how felt when I was taking about 600mg per day. I was moody and had low energy. Didn't have my thyroid checked at the time but these symptoms went away when I stopped taking it.

I've heard that it helps with heavy metal detoxing, another thing that in turn may help with mental clarity. This probably wouldn't explain immediately felt effects, however.

Most people take ALA for 2 reasons. To improve neuropathy, usually from diabetes. And for blood sugar contro: ALA acts as an insulin mimetic, much the way Chromium Picolinate is. However, the problem is that both require pretty heavy doses to be effective and studies which found improvements involved taking massive doses. I take 600mg of ALA for both purposes.

I'm not aware of ALA acting like Ginko Biloba. Turmeric and coconut oil are the ones that have more claims attached for improving memory or preventing Alzheimers. But it's intriguing that you can recover things from your long-term memory by taking ALA.

If you take ALA, you also want some Biotin by a measure of 100 to 1. So if you take 600mg of ALA, then you want 6mg of Biotin. Supposed to deplete Biotin by competing for the same enzymes.