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Research-grade format: High-purity, lyophilized material designed to support reproducibility in non-clinical metabolic studies
The agency applied the four-factor framework set out in 21 CFR 216.23(c), covering physical and chemical characterisation, safety, evidence of effectiveness, and historical use
Water soluble vitamins, like B12, can be tolerated at higher doses without adverse effects upon the body, and the National Academy of Medicine has not established an upper limit of Vitamin B12 intake
For thalassemia patients, who might have trouble absorbing, sublingual or liquid forms might be better
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