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Summary Magnesium stearate is an additive for specific foods and cosmetics and an inactive ingredient in many pharmaceuticals and supplements.—Alex Yampolsky, Verywell Health, 30 Apr. 2025 But for those who are more sensitive, anything of mammalian origin is off the table: dairy, wool, gelatin, lanolin, and even more obscure products such as magnesium stearate, a fat derivative often found in pills and drug capsules.—Sarah Zhang, The Atlantic, 7 Oct. 2024 Culturelle Daily Probiotic,Digestive Health Capsules The Culturelle probiotic is made up of Lactobacillus GG, Inulin, hydroxypropyl methylcellulose, sucrose maltodextrin, sodium ascorbate, magnesium stearate, silicon dioxide and titanium dioxide.—Amber Smith, Discover Magazine, 6 Jan. 2024 Some common medication ingredients made from mammals include gelatin, magnesium stearate, and lactose.—Hilary Tetenbaum, USA TODAY, 22 Aug. 2023 Few people react to pills, but medicines or vaccines that contain gelatin, glycerin, magnesium stearate or bovine extract can cause trouble for highly sensitive individuals.—Joe Graedon and Teresa Graedon, oregonlive, 21 Aug. 2023
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