What's the difference between the two, and is there a difference in dosage for their inuslin mimicking properites? Thanks.
Thread: Difference Between R-ALA and ALA
03-30-2008, 06:43 PM #1
03-30-2008, 07:08 PM #2
ALA is usually a 50/50 mixture of the S and R isomers of alpha lipoic acid. The R form is beneficial where as the S form is not, and actually some research shows it has negative implications. "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."
R-ALA is just the isolated "good" form of ALA.
K-R-ALA (bonded to potassium) is better.
NA-R-RALA is supposedly the best form.
03-30-2008, 07:09 PM #3Labrada Nutrition
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03-30-2008, 07:11 PM #4
03-30-2008, 07:14 PM #5
03-30-2008, 07:14 PM #6
I think a lot of the benefits of alpha lipoic acid (especially on glutathione) can be had at much lower doses than normally seen provided you don't used mixed (R/S) ALA.
Last edited by Phosphate bond; 03-30-2008 at 07:17 PM.
03-30-2008, 07:17 PM #7
03-30-2008, 07:30 PM #8
03-30-2008, 07:54 PM #9
I would say if you are using really good stuff like K-rala or Na-rala 10 mg is going to work pretty good (Geronova even says the absorption is that much better anyway). Then I would use 1-3 mg biotin to balance it.
Besides there is only so much effect you can get from "mega dosing" a single nutrient anyway. After that point it is the law of dimishing returns.
03-30-2008, 08:39 PM #10
03-30-2008, 08:41 PM #11
05-24-2008, 08:02 PM #12
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Bio-Enhanced&Reg; Na-Rala Sodium R-Lipoic Adic (Na-Rala is the sodium of R-Alpha Lipoic Acid)
70% active R-lipoic acid powder, is stable, extremely low (<2.0 %) in insoluble polymer and offers an innovative solution for capsules, tablets and powdered drink mixes.
Completely water soluble. 1 g dissolves in 50 ml water at room temperature.
Off-white to yellowish powder, with 70% active R-lipoic acid.
Powder melts at 240? ~ 250? C (with decomposition beginning at (~210? C).
Powder is free flowing, heat stable up to 85? C and ready for blending with excipients.
Bio-Enhanced? Na-RALA is significantly more bioavailable than R-lipoic acid (RLA). Acidic components may adversely affect the stability and shelf-life of Bio-Enhanced? Na-RALA containing products.
1000mg (1gram) RLA reaches a maximum concentration (Cmax) of 1.1ug/ml in human plasma.
100mg (0.1gram) Bio-Enhanced? Na-RALA reaches a Cmax of 2.3ug/ml.
On a weight basis Bio-Enhanced? Na-RALA reaches a Cmax 21 times higher than RLA.
Note: Although Bio-Enhanced? Na-RALA may be suitable for multi-component formulations, the performance of this product in any new or experimental formula must determined by testing its stability with all of the ingredients.
K-RALA and Na-RALA
In 2003 GeroNova launched the first stabilized R-lipoic acid (RLA) containing dietary ingredient into the nutraceutical market: K-RALA? (Potassium RLA).
The pure potassium salt is unstable and had to be supported on silica and MCC after de-polymerization to make it suitable for tablets and capsules.
The additional processing raised the cost of an already expensive raw material (RLA), and could only be offered with a 40% active load.
K-RALA-40% was suitable for direct compression or encapsulation, but unsuitable for drink mixes. To deliver a:
100 mg active dose of RLA requires 250 mg K-RALA-40%
100 mg active dose of RLA requires 143 mg Na-RALA-70%
Increased stability: Bio-Enhanced? Na-RALA requires no refrigeration and has a shelf life of at least 3 years without polymerization. Solid R-Lipoic Acid is prone to quickly polymerize upon exposure to heat, light, and moisture.
Increased Solubility: cleanly soluble in water, whereas RLA is poorly soluble and K-RALA? can only be dispersed because of the insoluble excipients.
No Solvent Residues: due to the low melting point of the lipoic acid crystalline structure, there is a tendency for RLA to hold on to high amounts of cyclohexane, ethyl acetate or toluene.
The additional processing necessary to make Bio-Enhanced? Na-RALA removes the residual solvents.www.cognitivenutrition.com
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