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Zinc L-carnosine (beta-alanyl-L-histidinato zinc [1]) (N-(3-aminopropionyl)-L-histidinato zinc [2]), often simply called zinc carnosine, and also known as polaprezinc, [3] is a mucosal protective [4] [5] chelate compound of zinc and L-carnosine invented by Hamari Chemicals, Ltd. [6] [7] It is a quadridentate 1:1 complex of a polymeric nature. [6]
Carnosine is naturally produced by the body in the liver [2] from beta-alanine and histidine. Like carnitine, carnosine is composed of the root word carn, meaning "flesh", alluding to its prevalence in meat. [3] There are no plant-based sources of carnosine. [4] Carnosine is readily available as a synthetic nutritional supplement.
A Zn chelate supplement was compared with zinc sulfate in broiler chickens. Weight gain and feed intake increased quadratically (p<0.05) with increasing Zn concentrations from the chelate and linearly with Zn sulfate. The relative bioavailability of the Zn chelate was 183% and 157% of Zn sulfate for weight gain and tibia Zn, respectively. The ...
While some studies have found that vitamin D 3 raises 25(OH)D blood levels faster and remains active in the body longer, [44] [45] others contend that vitamin D 2 sources are equally bioavailable and effective for raising and sustaining 25(OH)D. [46] [47] If digestive disorders compromise absorption, then intramuscular injection of up to ...
Vitamin D 2, or ergocalciferol, is obtained from D 2 supplements or fortified food sources. [3] These two forms of vitamin D are metabolized in the liver and stored as 25-hydroxyvitamin D. [ 4 ] Before biological use, the storage form must be converted into an active form.
Looking to increase your vitamin D intake? These foods contain more vitamin D than an egg and are easy to incorporate into your eating pattern. 6 Foods with More Vitamin D Than an Egg, According ...