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Magnesium stearate is found in many supplements. Is it bad or neutral? What's Ray Peat's opinion about it?
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Personally, I don't think it's all that bad j - based upon this comment from RP about the previous formula for Amour thyroid.j. said:Magnesium stearate is found in many supplements. Is it bad or neutral? What's Ray Peat's opinion about it?
Ray Peat said:Armour thyroid, USP, was the standard thyroid used widely for about 80 years. Since ownership of the product name was bought by Revlon and then a series of other companies, I'm not sure anything of the simple original formula remains; maybe magnesium stearate, I haven't looked lately.
4peatssake said:Personally, I don't think it's all that bad j
Gabriel said:After all, it is just magnesium + stearic acid (C18:0), a saturated fatty acid.
Dan mentions Sahelian and a few others on both sides of this issue in a pretty comprehensive article on his website.j. said:Ray Sahelian, author of a book about pregnenolone, has some thoughts on the safety of magnesium stearate.
Link
It is most def NOT a nutritional supplement. Both stearic acid and magnesium stearate are used as 'flow agents' or lubricants in the processing of the pill/caps. Stearic acid is found in nature, though mag stearate is not. Mag stearate is usually made from (GMO) cottonseed or canola oil, or palm oil. That is dandy in itself. It may cause a decrease in bioavailability in the desired ingredients of your supplement. That it is necessary in the production is definitely not true. Thorne Research, Pure Encapsulations, and some other companies do not use them and they never have. I have used both of these companies for 30 years. The industry claims there is so little in each pill that it just doesn't matter what the (unintended) effect is. I personally choose to have less fillers and less toxins in my vitamins. Thank you very much. There are some things I may take infrequently that probably have it as an ingredient, so I do not want more. Like X-rays. I wouldn't worry about it if you bought some products, but if you take something daily then my suggestion is to do your best to get as clean a supplement as you can according to your situation. And feel good about it.I would consider it a nutritional supplement, both stearic acid and magnesium are good for you. Of course there is always the question of impurities of manufacturing, but that is true with everything.
Common sources of the starting material, stearic acid, are vegetable triglycerides obtained from coconut and palm oils and animal triglycerides from tallow.
Purified sodium stearate can be made by neutralizing stearic acid with sodium hydroxide.
Seems like a very simple and natural process unlikely to produce impurities/contaminants, you can do it at home.Magnesium stearate is produced by the reaction of sodium stearate with magnesium salts or by treating magnesium oxide with stearic acid.