what does b12 injection contains Vitamin Methylcobalamin B12 Injection (Energy, Focus

History of B12 shots In the 1960s, Dr

Common Side Effects Mild injection site pain or swelling Slight nausea or dizziness Temporary flushing or warmth sensation Mild stomach discomfort Rare & Serious Side Effects Severe allergic reactions (rash, itching, swelling) Breathing difficulty or hypersensitivity Irregular heartbeat (rare cases) Strong reaction to Vitamin B12 or Vitamin C sensitivity Most side effects are temporary and resolve with proper medical care

About Mile High Compounds Colorado-based research compound supplier specializing in high-purity reference materials for laboratory applications

Individually, these risk factors may be modest