what gauge for b12 injections intramuscular injection needle size Best IM injection.... 1. 18G 2. 22G 3. 23G 4. 25G size needle for vitamin – A Guide to Needle and

Comparing options with your provider makes sense if side effects or concerns arise

You may benefit from a B12 injection if you are experiencing: Persistent tiredness or fatigue Low mood or irritability Difficulty concentrating Muscle weakness Pins and needles Pale skin Reduced appetite If you are unsure whether you need B12 supplements or injections, our pharmacist can provide guidance based on your symptoms and health history

The four forms (vitamins) of B12 are all deeply red colored crystals and water solutions, due to the color of the cobalt-corrin complex (biologically relevant enzyme, it is the "core" of vitamin B12)

Similarly, caffeine can interact with the absorption of B12, as it influences the digestive system and might exacerbate feelings of discomfort post-injection