All amino acids share a central carbon (C) bonded to an amino group (-NH), a carboxyl group (-COOH), a hydrogen atom, and a variable side chain (R group)
U-100 refers to the unit marking format used on many insulin syringe listings
However, some groups of people might require more than what they get from food, such as ( older adults those who are pregnant or breastfeeding those who eat a vegan or vegetarian diet those with digestive issues people taking certain medications If you fall into any of these categories, you might consider taking a vitamin B12 supplement and you may wonder if a liquid form is the way to go
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