Vitamin b12

I had serious nerve issues, burning sensation, pin and middle, tingling, fatigues, muscle pains, blurry vision, body weakness, plain tongue, neck pain, mouth ulcer and etc., Dr. Berg, you made me realize I was B12 deficient. I visited several Dr. in my country Nigeria with so many tests, X-ray, MRI. All but to no avail. When I met you on YouTube and saw your lecture, you saved my life. Thank you Dr. God bless you.