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Yes, B12 can expire
The general advice is to review your symptoms to establish if you may have an undiagnosed B12 deficiency
A role for hormone-sensitive lipase in glucose-stimulated insulin secretion: a study in hormone-sensitive lipase-deficient mice
Frequently Asked Questions In addressing concerns about vitamin B12 injections, it's important to understand the possible side effects and the expected timeline for improvements in symptoms like fatigue
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