ozempic semaglutide uses side effects FDA Gives New Effect Warning GLP-1 Drug Can Cause Rare,

Howells RE, Dhar KK, Hoban PR, Jones PW, Fryer AA, Redman CW et al

Am J Physiol Endocrinol Metab (2013) 305(2):E16170

[4] The histologic differential diagnosis of mucosal pigmentation is: lipofuscin (melanosis coli), hemosiderin-laden macrophages, and melanin (rare)

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10.1016/S0304-3940(03)00172-1 Neurosci

However, they point out that their study design reduces many of the biases common to other observational studies, and results were consistent after additional analyses, providing greater confidence in their conclusions