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Whether someone with PA can utilize liver stores is something I'm not sure about - some textbooks indicate that the mobilization mechanism of B12 from the liver is not well understood
However, it is important to note that there is limited scientific evidence to support these claims
However, a significant gray zone exists between 200 and 300 pg/mL where patients may experience symptoms despite levels that appear technically normal
Shipping Specs ACTIVE INGREDIENTS: Each mL of sterile aqueous solution contains: Thiamine Hydrochloride (B1) 100 mg Niacinamide 100 mg Pyridoxine Hydrochloride (B6) 10 mg d-Panthenol 10 mg Riboflavin (B2) (as Riboflavin 5'-Phosphate Sodium) 5 mg Cyanocobalamin (B12) 100 mcg Inactive Ingredients: Citric Acid and Benzyl Alcohol 1.5% v/v (preservative)
That difference shapes opened-vial dating from day one
