Is there I difference between glutamine and L glutamine?

[Axion]

I was looking on the back of the ON whey tub and it says there is 3.xx grams of "glutamine and precursors" in each serving. So if I'm taking 3 serving of On whey a day would there be any point in also taking 5 grams of L glutamine a day, or is this already being covered?

[Lee J B]

People need to take a lot more L-Glutatmine than they think, upto around 10 - 20g for it to actually be effective. There's no difference since glutamine is essentially one thing, an amino acid - they can't alter it in many ways except for making it more digestable etc and even that doesn't alter the actual compound. I'd say go for both.

[Tom Ricci]

There are two different forms of glutamine being used by supplement companies these days, L-Glutamine and Glutamine Peptides. The peptide form
of glutamine is more effective but the L-Glutamine is effective but you need to take more of it in order for it to have the same effect as the peptide form.
In my experience, Optimum Nutrition's L-Glutamine gave me results nearly as
good as Peptide form made by other companies and the glutamine they put in their whey protein I think is the same.

[Lee J B]

Yes, Glutamine Peptides are exactly the same thing, except the peptide bonds have been cut by endopeptidase enzymes making them a lot easier to digest...problems? Yes.... per gram it's not as effective because of the broken polymer chains.

[Axion]

So then the "glutamine and precursors" listed in the optimum whey is the same as the "l-glutamine" people buy seperatly?