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
A high HPLC area-percent result does not necessarily identify every impurity, does not always quantify inorganic salt content, does not replace residual solvent testing, and does not establish stability after storage or solution preparation
Safety, Handling & Reconstitution For optimal solubility and structural stability, researchers must reconstitute the lyophilised solid using Bacteriostatic Reconstitution Solution (0.9% Benzyl Alcohol)
However, its important to note that B12 injections can have side effects, although these are generally rare
Only a handful of people Sinha pointed to a recent study published in the online journal of JAMA which found an association between high intakes of vitamins B6 and B12 and hip fractures in older women