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Mezitis NH, Maggio CA, Koch P, Quddoos A, Allison DB, Pi-Sunyer FX. Glycemic effect of a single high oral dose of the novel sweetener sucralose in patients with diabetes. Diabetes Care. 1996 Sep;19(9):1004-5
Baird IM, Shephard NW, Merritt RJ, Hildick-Smith G. Repeated dose study of sucralose tolerance in human subjects. Food Chem Toxicol. 2000;38 Suppl 2:S123-9.
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By and large, it is accepted that NNS (non-nutritional sweetners) do not impact acute or long-term glycemic load, even using extremely high doses of sucralose or aspartame.