vitamin b12 injection pen B-12 Injection, 3,000 mcg/mL at Tractor Supply Co Vitamin B12 Injection - 10mL

It plays a vital role in brain function and the production of DNA and red blood cells

A Vitamin B12 shot might be exactly what you're looking for if you need a natural energy boost

Pure B12 injections are mainly designed for individuals with nutrient deficiencies to help boost energy and enhance fat metabolism

Depending on your circumstances, multiple injections may be necessary to achieve optimal B12 levels

As I've already said in a previous reply, you should ask for a referral to a neurologist (urgent) and a gastroenterologist - this would be usual considering your symptoms and the length of time you have had them (and perhaps to an endocrinologist and a rheumatologist if antibodies and inflammatory markers are raised)