Old ALA (racemic mixture) 600mg to 1800mg a day.
This older more common form needs to be taken on an empty
stomach. 1/2 is the active R form and 1/2 is inactive and called S form.
The newer R-lipoic acid stablilzed (NaRALA) can be used 100mg daily instead of the higher doses of the older form.
Doctor's Best is one example of this new form.
Some people have posted here that they take 200mg a day of this. That would be a personal choice.
Not available commonly locally in stores, but easily on the net.
I get mine at Amazon.com but iherb.com also carries it.
http://www.iherb.com/Doctor-s-Best-B...-Veggie-Caps/4
The stabilized form is highly soluble and so is absorbed better, hence the lower doses necessary.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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