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Merck

Magnesium stearate: an underestimated allergen.

Journal of biological regulators and homeostatic agents (2012-12-18)
A Tammaro, C Abruzzese, A Narcisi, G Cortesi, F Persechino, F R Parisella, S Persechino
PMID23241129
ABSTRACT

Magnesium stearate is a substance often used as a diluent in the manufacture of medical tablets, capsules and powders. Moreover it is usually found as a food additive or pharmaceutical excipient. We report the first case of a 28 years old woman affected by an allergic reaction from this substance with an urticarial manifestation.

MATERIALS
Product Number
Brand
Product Description
S1340000
Stearic acid, European Pharmacopoeia (EP) Reference Standard
PHR1114
Supelco
Stearic Acid, Pharmaceutical Secondary Standard; Certified Reference Material
S4751
Sigma-Aldrich
Stearic acid, Grade I, ≥98.5% (capillary GC)
76137
Supelco
Stearic acid, certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
175366
Sigma-Aldrich
Stearic acid, reagent grade, 95%
W303518
Sigma-Aldrich
Stearic acid, ≥95%, FCC, FG
85679
Supelco
Stearic acid, analytical standard