correct syringe for b12 injection How to self-inject intramuscular vitamin - Overview Why B12 Shots Are Popular
Description
When losing significant weight, skin must remodel and tighten

results vary by individual and are not guaranteed

other allergic reactions that have been reported include erythema, skin rash (unspecified), pruritus, general malaise, and respiratory difficulty due to bronchospasm

Summary: Feeling worse after a B12 injection typically reflects your body adjusting to replenished vitamin levels, triggering metabolic processes that may temporarily cause fatigue, headaches, or injection site discomfort
