Some online medical supply stores sell it, but regulations and availability vary by region
Platelet Rich Plasma (PRP) PRP harnesses the body's healing potential
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
If you have a B-12 deficiency, it can be more challenging to lose weight, and you might feel sluggish or tired, so B-12 injections can help boost your energy and metabolism.
In this case, the cobalamin enters the bloodstream directly and bypasses enteral absorption with the help of the intrinsic factor
The most interesting finding is the strong upregulation of Nos3, slight upregulation of Nos1, and suppression of Nos2 compared with control animals