See a doctor if you have high B12 and High B12 on a blood test doesnt always require action, but certain combinations warrant prompt evaluation: B12 above 1,000 pg/mL without supplementation or injections Unexplained fatigue, weight loss, abdominal pain, or night sweats alongside elevated B12 Abnormal liver function tests (ALT, AST, bilirubin) or kidney markers (creatinine, GFR) on the same panel Abnormal complete blood count (CBC), especially elevated white blood cells, red blood cells, or platelets B12 levels that are rising over serial measurements without a clear dietary or supplement explanation What to do about high B12 levels There is no specific treatment for high vitamin B12 because the B12 level itself is almost never the problem
However, if you're experiencing symptoms of a deficiency or have underlying health conditions, we may recommend a simple blood test to personalize your care
National Poison Hotline at 1-800-222-1222
Other symptoms to note : Chicken pox rashes typically start toward the middle of the body and work outward toward the extremities

Uses of Hydroxocobalamin Injection Vitamin B12 deficiency Pernicious anemia Megaloblastic anemia Peripheral neuropathy due to B12 deficiency Maintenance therapy in vegans or elderly patients Cyanide poisoning (approved use in emergency medicine) How Does THydroxocobalamin Injection Works Hydroxocobalamin is converted in the body to active coenzyme forms of Vitamin B12, which: Help in red blood cell production Maintain nerve function and myelin sheath Participate in DNA and protein synthesis Act as a cyanide scavenger by binding to cyanide ions and converting them into non-toxic cyanocobalamin , which is excreted in urine Common Side Effects of Hydroxocobalamin Injection Temporary skin redness or itching Mild diarrhea Headache or dizziness Injection site pain or swelling Reddish urine discoloration (harmless) Rare: Hypersensitivity reactions Generally well tolerated