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The one detail that varies is preservative concentration, listed at 9 mg/mL in the 30 mL vial and 11 mg/mL in the 20 mL vial
Vitamin C
B12 is an essential water-soluble vitamin, also known as cobalamin, responsible for critical functions like red blood cell formation, brain health, and DNA synthesis
Understanding the Basics Yes, vitamin B12 (cobalamin) is a water-soluble vitamin , belonging to the B-complex group of essential nutrients
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