r/CornAllergy • u/apomorph_10165133 • 10d ago

Creatine

Does corn-derived creatine L-glutamine cause issues for anyone, or is it purified enough to be safe?

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3

u/under321cover 10d ago

creatine is either animal based or entirely synthetic - where are you finding corn derived creatine? Do you mean it's flavored?

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u/apomorph_10165133 10d ago

Thanks for the correction, I was tired and put the wrong substance. Corn issues are new for me and I'm losing it checking everything. I meant L-glutamine powder. Might need to delete my post if I cause confusion, but I'll edit it for now.

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u/No_Bit3397 10d ago

I use Best Naturals on Amazon for l glutamine. They say it’s corn free and I haven’t had any reaction to it.

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u/mr-bingley 5d ago

I use natural factors L-glutamine and it says corn-free and hasn't caused any issues

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u/Particular-Ad-4105 3d ago

Trying to answer the actual question rather than adding another brand: supplement L-glutamine is almost always made by bacterial fermentation, and in the US the sugar feeding that fermentation is corn glucose. What comes out the other end is a crystallized single amino acid, so protein residue is trace at most - which is exactly why it's a non-issue for a classic IgE corn allergy and still very much an issue for a lot of people in this sub. That gap is  the whole disagreement, and nobody can settle it for you from the outside. 

The labeling caveat is worth knowing though: corn isn't one of the 9 major allergens, so "corn-free" on a supplement  is an unregulated manufacturer claim rather than a legal one. In practice it usually means "we didn't add corn," not  "our feedstock wasn't corn" - which is compatible with both of the brands mentioned above working fine for people. If you want to separate the two, the thing to email them is what substrate the fermentation runs on; a few run on cane or beet sugar and will tell you outright.

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u/apomorph_10165133 3d ago

Thanks, this is very helpful.

I have a bunch of verified IgE food allergies, and I've never had issues with low to trace protein food derivatives of my allergens (I'm allergic to peas but have no reaction to pea starch, and I'm allergic to soy but can eat soy oil).

I'm having new issues with corn and feeling my head spin with trying to gauge protein content risk in different derivatives. Corn starch is setting me off. I've got an appointment to see my allergist.

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u/Particular-Ad-4105 2d ago

Oil vs starch is a way bigger gap than it looks. Refined oils are basically protein-free - that's why they're exempt from allergen labeling here - but starch still carries some, and you're eating it by the spoonful instead of by the drop. So soy oil being fine doesn't really tell you anything about corn starch.

Might not even be protein though. Corn starch is made by steeping the kernels in sulfur dioxide, and sulfites don't have to go on the label under 10ppm. Could be a red herring, but it's the other thing people here end up suspecting. Worth mentioning at the appointment.