bad reaction to b12 injection Frequency: How Often Should You Get a Shot? Why do I feel worse

Common causes include: Pernicious anemia, an autoimmune disorder hindering Vitamin B12 absorption Gastrointestinal surgeries, like gastrectomy, impact Vitamin B12 uptake Long-term use of certain medications, such as metformin or proton pump inhibitors Diets lacking in Vitamin B12, often seen in vegans and vegetarians For those without a deficiency, Vitamin B12 injections are not typically recommended, as their body can naturally regulate and excrete excess amounts of the vitamin

Use separate syringes for each injection

Some men report increased energy, sharper focus, and better sleep within 2472 hours of their first injection

Draw the B12 Draw B12 from the vial into your syringe of choice (we recommend 0.3 ml insulin syringes for our B12 vials)