what does b12 injections do for you Are Vitamin Shots Right You? The Science Behind Vitamin B12:

Theres a quick pinch and some soreness after, but pain is usually mild and goes away in a day or two

Though allergies to cobalt are rarely dangerous, taking any form of B12 supplement, whether by injection, tablet, or topically applied gel, may result in an uncomfortable, itchy rash

The following comparison summarizes the key considerations: For patients with intact GI absorption, oral high-dose supplementation (1,000 to 2,000 mcg daily) provides a convenient and cost-effective path to correcting deficiency

However, a significant gray zone exists between 200 and 300 pg/mL where patients may experience symptoms despite levels that appear technically normal