Where should I inject B12 Ideal injection sites include areas with fatty tissue, such as: The back of the upper arm Abdomen Love handles/flank area Dmitriy2025-07-02T03:02:37+00:00July 2, 2025|B12 Column 2| Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail