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10.3389/fphar.2025.1498191 13 LiuH.YangQ.LiZ.YanS.MingS
The right B12 choice usually becomes clearer when symptoms, labs, diet, and prior response are reviewed together instead of judged by one blood value
Individual gastric tolerance varies widely on GLP-1 medications
Note that the norleucine substitution at position 4 has already removed the methionine thioether present in native alpha-MSH, so tryptophan governs handling
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