how to give self b12 injection a Injection: A Self-Administer Guide Best Vitamin B12 Injection Sites:
Description
The most common thing you might notice is mild redness, tenderness, or slight swelling where the needle went in, and that usually settles quickly

Khalil M, Lau HC, Thackeray JT, Mikail N, Gebhard C, Quyyumi AA, et al

Vargas JNS, Hamasaki M, Kawabata T, Youle RJ, Yoshimori T

No dose-escalation or maximum tolerated dose studies have been conducted, limiting understanding of safety at higher doses
