This might be a little off-topic. Is SMI2LE's RALA have only +R Alpha Lipoic Acid? Or is bad negatively charged ALA in their? What about K-R-Ala? I just got some.
http://www.aor.ca/ma...-october_01.pdf
yeah, on the gernova site, they say, it is "(typical RLA content >99.4%, SLA< 0.6%)". My post started because,
http://www.aor.ca/ma...summer_2002.pdf
said that AOR.CA are the only people that +RLA and no SLA.
That was true in 2002, when the above was written. AOR was the first company in the world to release pharmaceutical-grade R(+)-lipoic acid, or indeed to make R(+)-lipoic acid available as a supplement, period, instead of just to scientists for research purposes. Since our initial pioneering efforts, some companies have tried to pass off the racemate or a sloppy partial chiral separation as R(+)-LA, but today at least some other companies do offer the real thing.
If you got the KRALA, then you need 600 mg KRALA to equal 200 mg RALA. So to get an effective anti aging/cognitive enhancement dose, take 600 mg KRALA 3 times a day. If you got the plain RALA, then 200 mg = 200 mg.
Careful: this depends on exactly what you're buying. KRALA itself -- meaning the fully-reacted potassium salt of R(+)-LA -- is 84% R(+)-LA moiety; curiously, Geronova's previously-posted information suggests that their KRALA material is 67% R(+)-LA by weight; and their final marketed product contains an alkaline carrier, which brings the R(+)-LA content down to 40%. So depending on exactly what you buy, 600 mg could provide ~500, 400, or 240 mg R(+)-LA.
200 mg just falls out of it
First, again, the point is, it isn't actually 600 mg of R(+)-lipoic acid, but 600 mg of the salt and/or a carrier. Think of the amount of "elemental" mineral in a salt or chelate.That is a lot of RALA at 600 mgs.
Second, 600 mg is not actually a lot of R(+)-lipoic acid: clinical trials routinely use 600-1800 mg of the racemate, and often intravenously at that. (Unless you were only referring to the bulk).
With the safety concerns that AOR put out in their periodical I am debating whether or not I should take it.
To what safety concerns do you refer? Everything has risks, of course, but even racemic lipoic acid is not acutely toxic, and the orthomolecule I would say can be fairly classified as amongst the safest substances to put into your body (if it's the real thing, of pharmaceutical grade, etc).
I'm aware of the chemical similarity, but do you have a reference for how much biotin one is supposed to take which I gather is 1 mg biotin/gm...ALA? gm R-ala?
R(+)-lipoic acid, like the conventional stuff, competes with biotin for absorption. The reason for this lies in the structural similarity between biotin and lipoic acid, and their sharing the same transporter (1). However, the competition between biotin and lipoic acid is very small, and the inhibition is mostly lipoic acid inhibiting biotin absorption, because one takes literally a thousand times as much lipoic acid as biotin. Therefore, the inhibition of lipoic acid absorption is negligible; it's the inhibition of biotin that might raise concern.
But the evidence shows that this isn't really an issue. First, clinical trials in humans using doses as high as 1800 mg/day of lipoic acid with no biotin have never shown any symptoms related to biotin deficiency; and, second, a careful animal study (2) concluded that even though "the chronic administration of lipoic acid reduces the activities of biotin-dependent pyruvate carboxylase and -methylcrotonyl-CoA carboxylase," still "enzyme activities remain normal if biotin at pharmacological doses is administered together with lipoic acid" and that "Even without supplemental biotin, the decreases in enzyme activities are not dramatic and would presumably not cause pathology in patients." "The doses of lipoic acid that were chosen in [that] study span the range used for therapeutic purposes" in humans (2).
AOR provides ten times the DRI of biotin per daily dose in our R(+)-lipoic acid capsules because it is harmless and might help in persons who are already marginally low in biotin intake. The reality is, however, that most people using R(+)-lipoic acid are already supplementing biotin at many times the RDA.
To your health!
AOR
1. Prasad PD, Ganapathy V. Structure and function of mammalian
sodium-dependent multivitamin transporter. Curr Opin Clin Nutr Metab
Care. 2000 Jul;3(4):263-6.
2. Zempleni J, Trusty TA, Mock DM. Lipoic acid reduces the activities of
biotin-dependent carboxylases in rat liver. J Nutr. 1997
Sep;127(9):1776-81.