A buddy of mine works for GNC and has been in the supplement business for many years. Word on the street is that they're doing everything they can to shut down availability of NAC including buying up supplies and forcing supply chain distribution issues & shortages. Haven't heard anything about an outright banning yet but who knows. Sounds like maybe Quercetin, Zinc and D3 are in the crosshairs as well. I'm not surprised in the least bit. They're desperate. Everyone should replenish their personal stashes now before it's too late.
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https://www.lifeextension.com/vitamins-supplements/item02302/bio-quercetin
My friend Larry has probably a hundred or two different products from Life Extension. He loves that company. I bought NAC from them.
Thanks!
29mg? Maybe it's a different version with more potency but I take 400mg a day.
LEF does sell a conventional version of quercetin, with added extracts as well; see here. 250mg quercetin plus a roughly equal amount of camu-camu, apple, and onion extracts, and citrus bioflavonoids.
Their newish Bio-Quercetin is MUCH more absorbable (quercetin is one of the supplements, like curcumin, that absorbs poorly, and methods to increase bio-availability are becoming comon). From their product description:
Our Bio-Quercetin® contains a form of quercetin that has been integrated into a phytosome. A phytosome is a tiny sphere made out of plant-derived phospholipids. By combining quercetin with this phospholipid-based delivery system, the quercetin in this formula is more bioavailable, making it easier to absorb and more readily used by the body.1
Clinically Studied for Greater Absorption
In a randomized clinical study, researchers compared two orally administered quercetin phytosome doses (providing 100 mg and 200 mg of quercetin), along with one 500 mg dosage of traditional quercetin. They found that the quercetin phytosome could be administered at one-fifth the dosage of the traditional quercetin and still result in exposure 10 times greater. This means that the quercetin phytosome provides about 50 times greater bioavailability than traditional quercetin.1