Hi Dim,
It may not be true that most MSers take those supplements for fatigue, you might have got those ideas from some things I wrote. I've elaborated on it in a book I wrote. The book is called Multiple Sclerosis: One Owner’s Manual.
https://www.amazon.com/Multiple-Scleros ... 645468002/
If you take a very simplistic approach, you could break MS into two areas-1) fatigue related issues and 2) everything else. Sometimes, solving fatigue makes some of the other issues more bearable.
If we say fatigue is a lack of energy then we have to ask what is energy and how is it made in the body.
For all activity in living things the key to energy is a molecule called ATP (adenosine triphosphate). When it loses phosphate from its structure, energy is released which allows other molecular activities to occur. Although science has known ATP existed for around 100 years by now , it did take a long time to work out what it was doing. The 1997 Nobel prize for chemistry was awarded to three men who finally unscrambled the puzzle of how it was made and what it did.
See -
https://www.nobelprize.org/prizes/chemi ... s-release/
All the things we eat need to be converted into a form our body can use. Along the way, some elements of food become waste, some some become factors to assist cellular function and some go to the pathway that helps us make energy. If we discard all the other elements and just focus on the energy pathway, our body converts elements of foodstuffs into a sugar called glucose. A single molecule is made up of 6 carbon 12 Hydrogen and 6 oxygen atoms. Ignoring all the science stuff, we end up exhaling (or using) the carbon and oxygen and use the hydrogen atoms to drive the formation of ATP.
How do we do that? In every part of our body we have small membrane bound organelles called mitochondria. This is where the hydrogen atoms from our food are essential. They drive a complex molecular machine called an ATP synthase to make ATP.
On the way to getting to that stage, there a few cycles to transform those glucose molecules into the end stage atoms. The first is called glycolysis, which, after a few steps, requires additional oxygen. If it isn't available it becomes lactate and recycles back into glucose for a new cycle. There are a lot of steps and alternative pathways around this (which I will ignore) and the next relevant cycle is called the Krebs (or citric acid) cycle. This is where the hydrogen atoms are freed up to be taken to the last cycle. The transport agents that then carry the hydrogen to the last cycle are derivatives of B vitamins. The supplement your wife is taking descends from vitamin B1 (Thiamine). It will be a cofactor in a range of functions in the mitochondria. The transport agents for the hydrogen atoms derive from vitamins B2 and B3. All of them are important. Dark green leafy vegetables and meat are good sources for B vitamins.
The acetyl- L- carnitine helps transport fatty acids into the mitochondria so they can be 'burned' to release the hydrogen. That process (called Beta oxidation) releases the most hydrogen per cycle .
The CoQ10 is the major orchestrator of the movement of hydrogen electrons in the last stage in the process called the electron transport chain. Without it- you would be dead. If it is depleted- you would be fatigued. It's that fundamental.
However, those processes don't explain entirely why undue fatigue arises.
There is a very significant body of evidence building up that points the finger at Epstein Barr Virus (EBV) as a key element in MS. In my book, I tried to explain there is a possible mechanism for EBV to disrupt the orderly breakdown of ATP, leaving an excessive amount of adenosine. In our normal lives, ATP is always breaking down and adenosine is building up. We sleep to help clear the adenosine. If it doesn't clear, we remain unrefreshed and fatigued when we awaken.
Muscle fatigue also relates to ATP but its a different process and too involved for a web site chat.
I have treated my MS for over 20 years by focussing on EBV and taking the antiviral, valacyclovir. I don't have any cognitive fatigue and always have plenty of energy. I do have some muscle tightness in my left leg but I don't see it as a major fatigue issue. (that's a separate discussion about upper and lower motor neurons!).
So, what do I do that keeps me fatigue free?
I take
2x 500mg valacyclovir daily ( sometimes spelled as valciclovir)
2x 1000mg daily Aceytl-L-Carnitine
750mg daily of CoQ10 (that's a massive dose but the issue would be is it wasted not is it toxic)
2x500mg daily Magnesium glycinate ( needs to be glycinate, other forms would give you diarrhoea at that quantity)
I also take a curcumin supplement, but not as a fatigue treatment.
Hope that helps.
Regards,