vitamin b12 injection im or subq Side Effects B12 Shot Guide: Benefits, Dosage

Vitamin B12 shot side effects Most people tolerate vitamin B12 injections well, but possible side effects include: Mild: soreness or redness at injection site, mild diarrhea, nausea, headache, itching Rare but serious: allergic reactions (rash, swelling, difficulty breathing), low potassium (hypokalemia), dizziness or heart rate changes Get emergency medical help if you have signs of an allergic reaction to Vitamin B12: hives

It is distinguished from other codes, such as CPT 20600, which is for less complicated aspirations or injections of major joints without the use of ultrasound guidance, and CPT 20604, which is for smaller joints, such as those in the fingers or toes

Compounding Pharmacy FAQs - Prescription Requirements

This is because adequate exposure to stomach acid is needed to help the body absorb B12