To date, no human clinical trials have been completed, and all published efficacy data come from controlled murine studies using intraperitoneal injection
Unlike oral supplements, which may lose potency as they pass through the digestive tract, vitamin injections provide a direct, targeted dose that your body can use right away
Step 2: Draw the bacteriostatic water Using the 3 mL syringe with the larger gauge needle, draw exactly 3 mL of bacteriostatic water
(20) Intestinal problems: Because B12 is absorbed in the intestines, any disease that impairs intestinal function can interfere with B12 absorption
Vitamin B12, also called cobalamin, is a nutrient involved in red blood cell formation and energy metabolism
International Journal of Obesity