swelling after b12 injection Is Your Site Reaction Normal or Severe? What happens if you inject

In limited data it's generally reported as well-tolerated, but human safety data is still limited and long-term effects aren't fully characterized

CLICK HERE FOR SDS Active Ingredients: Each mL contains: Cyanocobalamin (B12) 1,000 mcg Sodium chloride 0.22% w/v Ammonium sulfate 0.1% w/v Citric acid 0.01% w/v Sodium citrate 0.008% w/v Benzyl alcohol (preservative) 1.0% v/v Indications: For use as an aid in the management of vitamin B12 deficiencies in horses, dogs and cats

Doctors must think about many factors when giving Vitamin B12 shots

Both injections and oral supplements are generally safe, but very high doses of B12 can cause side effects in rare cases, such as mild digestive issues or headaches