I found this on
www.1fast400.com I did not go through and read the actual study they mentioned.
So if I take half the amount of R-ala compared to ALA, I'll get the same results?
It’s not quite that simple, although until recently researchers thought this was the case. There is new evidence surfacing that the unnatural S-form may actually interfere with the beneficial properties of the R-form. In one study with mice, alpha Lipoic acid at high doses shortened the mean lifespan, but even at low doses, the R- form increased total life-span. So it is best to avoid the S-form altogether in order to achieve maximum benefits.
Do you have a list of studies I can reference for R-ALA?
1. Nichols, T.W. Alpha lipoic Acid: Biological Effects and Clinical Implications,
2. Moini, H., Tirosh, O., R-Alpha Lipoic Acid Action on Cell Redox Status, the Insulin Receptor, and Glucose Uptake in 3T3-L1 Adipocytes; Archives of Biochem & BioPhys 397, No2 384-391 (2002)
3. Liu, J. Killilea, D.W. et.al., Age-associated mitochondrial oxidative decay: Improvement of carnitine acetyltransferase substrate binding affinity and activity in brain by feeding old rats acetyl-L-carnitine and/or R-alpha-lipoic acid. Proc Nat Acad Sci 99, 1876-1881 (2002)
4. Liu, J., Atamna, H., et.al. Delaying Brain Mitochondrial Decay and Aging with Mitochondrial Antioxidants and metabolites. Ann NY Acad Sci 959:133-166 (2002)
5. Liu, J., Head, E., et.al., Memory Loss in old rats is associated with brain mitochondrial decay and RNA/DNA oxidation: Partial reversal by feeding acetyl-l-carnitine and/or R-alpha lipoic acid. Proc Natl Acad Sci USA 99, 2356-2361 (2002)
6. Hagen, T.M., Liu, J., et. al.; Feeding acetyl-L-carnitine and lipoic acid to old rats significantly improves metabolic function while decreasing oxidative stress, Proc Nat Acad Sci USA vol99, issue 4, 1870-1875 (2002)
7. Hager, K., Marahrens, A.,et.al. Alpha lipoic acid as a new treatment option for Alzheimer type dementia, Arch Geron Geriatr 32 (3): 275-282 (2001)
8. Hagen, T.M., Shigeno,E.T. et.al. Oxidative Stress in the Aging Rat Heart is Reversed by Dietary Supplementation with (R)-Lipoic Acid. FASEB J. 15, 700-706. (2001)
9. Hagen, T.M. Increased mitochondrial decay and oxidative stress in the aging rat heart: improvement by dietary supplementation with (R)-lipoic acid. In, Free Radicals in Chemistry, Biology and Medicine 27, 262-271. (2000)
10. Hagen, T.M., Vinarsky, V., et.al. (R)-alpha-lipoic acid reverses the age-associated increase in susceptibility of hepatocytes to tert-butylhydroperoxide both in vitro and in vivo. Antiox. Redox Signaling 2, 473-483. (2000)
11. Hagen, T.M., Ingersoll, R.T. et.al. (R)-alpha-lipoic acid-supplemented old rats have improved mitochondrial function, decreased oxidative damage, and increased metabolic rate. FASEB J. 13, 411-418. (1999)
12. Lykkesfeldt, J. Hagen, T.M., Age-associated decline in ascorbic acid concentration, recycling and biosynthesis in rat hepatocytes-reversal with (R)-alpha-lipoic acid supplementation. FASEB J. 12, 1183-1189. (1998)
13. Packer, L; Tritschler, H.J.; Neuroprotection by the Metabolic Antioxidant Alpha Lipoic Acid; Free Rad Biol Med 22, Nos 1 / 2, 359-378 (1997)
14. Hermann, R.; Niebch, G.; Enantioselective pharmacokinetics and bioavailability of different racemic alpha lipoic acid formulations in healthy volunteers. Eur J Pharm Sci 4: 167-174 (1996)