b12 injection dose Dosage and Frequency: 7 Guidelines for Adults Vitamin B12 3000, 100 mL

For the Schilling test flushing dose, 1000mcg should be administered IM

Other Ways to Supplement With Vitamin B12 If blood tests indicate that youre dealing with a vitamin B12 deficiency and you arent a fan of needles, you have a few ways to up your intake

Patients with Comorbidities People with certain health problems, like stomach issues or brain disorders, need special care with Vitamin B12 shots

The most common reports are mild stimulant-like effects (warmth, slightly higher resting heart rate), insomnia if dosed late in the day, and mild stomach upset with capsules

Miscellaneous Feeling of swelling of entire body

Mere weeks after I started on B-12 shots, I was almost entirely back to normal