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Systemic effects remain less certain because peptides are generally broken down during digestion, which reduces the amount that reaches circulation in active form

Legal status (US): Neither TB-500 nor thymosin beta-4 is FDA-approved for any human indication

Contraindications Diabetes patients on insulin or sulfonylureas face increased hypoglycemia risk

Even neurological signs and symptoms which indicate severe B12 deficiency may be present despite having normal red blood cells

For General Health and Deficiency Prevention : Cyanocobalamin is a popular choice due to its affordability and stability, ideal for those looking to meet daily B12 needs