why do i have to have b12 injections Vitamin B12 Injections: What You

The most common side effects are mild and include injection site reactions (redness, slight swelling, or tenderness), mild headaches during the initial days of use, and occasional dizziness or lightheadedness

This makes intramuscular shots the better option for patients who need quick results or to treat severe deficiencies

You can buy insulin syringes from retail pharmacies, hospital pharmacies, medical supply stores, or reputable online medical equipment suppliers

Adverse reactions reported following methylcobalamin administration include headache, infection, nausea/vomiting, paresthesias, and rhinitis

Telehealth providers can prescribe B12 shots

doi:10.3390/nu2030299