Certain populations face higher deficiency risk: vegetarians and vegans (B12 is primarily found in animal products), adults over 50 (decreased stomach acid reduces B12 absorption), individuals with digestive disorders like Crohn's disease or celiac disease, and those taking medications like metformin or proton pump inhibitors
You can expect to have increased energy, better hydration, improved mood, and clearer mental focus
"So you have a wide variety of people promoting these medications, anywhere from personal trainers all the way up to physicians," Varney said
Once reconstituted, the vial must be stored in a refrigerator (around 2-8C or 36-46F) and protected from light
[9] [10] Always inform your provider of all current medications and supplements
Levels 300-400 ng/mL typical therapeutic targets though individual variation