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Br Med J
It's single-use only (no preservative), but it's your safe alternative
This amino acid serves a distinct purpose from B12
So can higher BMIs, found a recent preprint study
The clinical pictures of vitamin B12 allergy caused by type 1 hypersensitivity that have been revealed with basophile histamine release test and skin prick tests as we have performed in our patient.10 We did not perform basophile histamine release test or specific IgE determination to indicate type 1 hypersensitivity reaction because of positive SPT results of both types of cobalamin preparation
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