why do you need to have b12 injections What Know About Vitamin how long before vitamin b12

Better Digestion: Improved appetite and resolution of digestive discomforts

As to the aches and pains, breathlessness etc, this could be due to B12 needing potassium to build RBC, so I would check out low potassium symptoms and eat a banana or maybe two until you have fathomed it out

Sometimes you need a positive boost to jumpstart your efforts and motivate you to keep going

Make sure there is no air trapped inside and no blood when you pull on the syringe slightly

This solution is intended for use as a supplement for cell culture media or for other biochemical assays in a controlled laboratory environment

And have you considered teaching the patient to self-inject