Guest guest Posted February 21, 2010 Report Share Posted February 21, 2010 Sheila, You wrote: > > How are you comparing 1.6mcg T3 and 66mcg of T4 in half a pound of beef > to 130 mg of thyroxine free thyroid extract Chuck?... That is 130 mg of extract, not 130 mg of thyroxine. The extract (tissue with T4 and T3 removed) is " thyroxine free, " which means, by law, it contains no more the amounts I mentioned before. Thus, there is a lot more T4 and T3 in a meat dinner than in a 130 mg dose of extract. Chuck Quote Link to comment Share on other sites More sharing options...
Guest guest Posted February 24, 2010 Report Share Posted February 24, 2010 I appreciate the clarification. Since I wrote that message I have found the Nutri Ltd site. Here is the link to their product Nutri Thyroid: .. ..<http://www.nutri-online1.co.uk/Patients/Products/ThyroidSupport/tabid/665/Defa\ ult.aspx>. .. .. There they clearly describe it as " hormone free " . However some sites selling it list it as " thyroxine free " . Besides Sheila I have found where one doctor [of rather dubious credibility to me] ASSUMES that the T3 must still be in Nutri Thyroid because they don't specifically mention removing it. I guess they are/were not aware of the previous usage of the term " thyroxine " , as I was not. Thanks, .. .. > > Posted by: " Chuck B " gumboyaya@... > <mailto:gumboyaya@...?Subject=%20Re%3A%20Apples%20and%20oranges> > gumbo482001 <gumbo482001> > > > Mon Feb 22, 2010 5:27 pm (PST) > > > > , > > You wrote: > > Chuck, I've found the exact same quote. But is it really correct to > > apply the term " thyroxine " to both T3 and T4? I thought thyroxine was > > actually T4???... > > It's an older ambiguous usage, but yes, all of the derivatives of > levothyroxine were sometimes called thyroxines or even thyroxins. Armour > dessicated gland used to be called thyroxin, too. > > The more modern usage is to reserve the word thyroxine for T4. Other > manufacturers, such as Standard Process and Nutriceutical are a bit more > explicit in saying " hormone free, " which is closer to the legal > requirement but also a forbidden term, at least for foods, since there > is no defining standard. Since they all seem to import the dried extract > from New Zealand, I suspect the denaturing process happens there, to > pass restrictions on importing meat products. > > My granddaughter works for a compounding pharmacist, and I asked her one > time to look up the limits on otc thyroid glands. I think it was 0.5 mcg > of both T4 and T3, but my memory could well be off. I'll keep looking. > > The problem is that these glandular extracts are regulated as food > supplements (in the U.S.), rather than pharmaceuticals. If the > manufacturer made any claims beyond nutrition, 21 CFR 201 would require > careful drug testing and labeling, and Section 502 would require a > detailed list of active hormones. Since they carefully avoid all this, > the extract falls under USDA regulations for meat byproducts. Both the > U.S. and EU regulations I could find require COOKING before any thyroid > product can be sold between nations to destroy active hormones. This > would clearly destroy T3 (and T2) along with any T4. > > However, they may get around this regulation by using the older alcohol > removal process. Of course, this would remove T3 as well as T4. > > Chuck Quote Link to comment Share on other sites More sharing options...
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