Here are some good food sources of vitamin B12: Advertisement | page continues below 3 ounces of cooked clams, without shells: 17 mcg 3 ounces of cooked oysters: 14.9 mcg 1/4 cup of fortified nutritional yeast: 8.3 to 24 micrograms, depending on the brand 3 ounces of cooked Atlantic salmon: 2.6 mcg 3 ounces of cooked ground beef, 85% lean: 2.4 mcg 8 ounces of 2% milk: 1.3 mcg 6 ounces of plain, fat-free yogurt: 1.0 mcg 1 serving of fortified breakfast cereal: 0.6 mcg 1 1/2 ounces of cheddar cheese: 0.5 mcg 1 large cooked egg: 0.5 mcg (A 3-ounce serving of meat or fish is about the size of a deck of cards.) Do you need a vitamin B12 supplement during pregnancy
The 50 mg lyophilized presentation is well-suited for extended research applications, repeated assay work, formulation screening in laboratory settings, or studies requiring larger quantities of copper peptide reagent
Use bacteriostatic (not plain sterile) water for a multi-dose vial so the preservative supports the multi-draw window, and reconstitute gently down the vial wall rather than blasting the powder
What are the symptoms of a B12 deficiency
Formulation vehicle: Lipid-based vehicles outperform water-based serums for absorption
Excessive vessel damage and blood clotting