Hi @lincolned, I have not heard of that but did find something that mentions the opposite but it's from 2002.

Mercury toxicity and antioxidants: Part 1: role of glutathione and alpha-lipoic acid in the treatment of mercury toxicity:
-- https://pubmed.ncbi.nlm.nih.gov/12495372/

Mercury toxicity is a bad thing but where did you read that high doses of ALA are bad and carry mercury into the brain?

I did find this information that says if you have a mercury toxicity health issue already it could make it worse - https://clubtbyh.com/2016/07/26/are-you-taking-alpha-lipoic-acid-please-stop-until-you-read-this/

The Surprising Connection Between Alpha Lipoic Acid And Heavy Metal Detox
posted on July 26, 2016 in ALA, From the Blog, Heal, Video Tips 98

This post is about Alpha Lipoic Acid (ALA) and its relationship to heavy metal detoxification in the body and brain, in particular mercury detoxification. This video is intended for those who have mercury amalgams or who believe they have toxic levels of mercury in their bodies.

I wanted to address this issue because ALA is a very common supplement. However, it has a role in metal detox that is not fully understood by many who take it, and can be very dangerous to your health if not used correctly. It can be extremely healing when used correctly.

ALA is present in many multivitamins, so you might be getting it without realizing it. Many of my clients are also taking this supplement in isolation, in high amounts, for brain health and longevity.

ALA Warning
Alpha Lipoic Acid (ALA) is a mercury-chelating antioxidant. If you have heavy metals in your body in significant amounts, it is not a good idea take large doses of any chelating agents unless you are aware of the potential side effects of redistribution (explained below) and you know how to take care of yourself should this occur. If you take ALA and start to feel fatigue, headaches, “burning brain”, rash, etc., I would stop taking ALA immediately.

What Is Alpha Lipoic Acid?
Alpha Lipoic Acid (ALA) is a naturally occurring antioxidant in the body and plays a role in energy production. It also chelates with mercury and other heavy metals to varying degrees. This means that it will bind with certain reactive heavy metals that it comes into contact with in your body.

In particular, ALA has an affinity to mercury. In other words, it has an especially strong “magnetic pull” to mercury. It will attach itself to mercury found in your body and brain.

It’s important to know that your body has stored away these reactive metals into remote places, like fatty brain tissue, bone, muscles, fat, organs that aren’t urgently “essential” for survival. This protects you from the damaging effects of these heavy metals.

When the mercury and other reactive metals are actively bound by ALA, the resulting compound is recognized as a neutral toxin that can be safely eliminated via your kidneys. This “neutral” molecule travels back into your bloodstream from wherever the ALA “found” the metal and bound to it, and your body is able to filter it out of your blood through your kidneys and eventually your urine.

Many people do not realize that ALA can do this. They are only taking it for longevity or for other reasons.

The big HOWEVER comes now:
ALA has a half life of 3-4 hours. This means that half of the ALA you took has been broken down into smaller compounds within 3 hours, and thus, is no longer strong enough to bind the mercury.

At the three hour point, half of the mercury that it has been pulled out of your body “storage” and was bound by ALA, is then dropped into your bloodstream, for your body to deal with. No ALA left in sight to bind to it.

This is called redistribution and it can be dangerous and damaging.

Redistribution can cause all of the same symptoms of mercury poisoning, all over again. There is a solution that I spoke about in the video. Keep reading…

also see you tube video: Robin Shirley CHHC "You need to understand alpha lipoic acid role in mercury chelation.
Please let me know what you think John