Just ran across an
interesting testimonial on a CFS forum. Below is a snippet from that post:
This summer, I read that B12 serum levels will rise after supplementation, but the serum level may not reflect the body's intracellular B12 status. I have normal (>500) serum b12, normal serum MMA, normal homocysteine (<8), no macrocytosis, no anemia, a normal Spectracell B12. Absolutely no sign of a functional B12 deficiency on paper. However... since my symptoms resemble the neurological effects of low B12, I called around and discovered that my doctor offers 5mg methylB12 shots for $35. Weight-loss clinics in my area also offer 1mg Hydroxycobalamin for about the same price. Hey, only experiment number 2,428 over the past 15 years, worth a try for $35.
And... that was it. My first methylB12 shot resulted in a headache, metallic taste, chills, visual-field sharpening, and the lessening of my exhaustion for a few hours. Went in for another shot a week later, and this time the fatigue lifted for almost a day, and the headache went away faster. Six shots and a couple of months later, I am feeling a thousand percent better. I've even jogged a little... ran, if you can believe it. My tingling is gradually fading. My memory is sharper and my mood is brighter. -- Against all odds, and despite all my normal B12 blood test results, injected (not sublingual) B12 is working to heal my brain and peripheral nerves.
If you have an interest in some of the symptoms of severity of vitamin B12 deficiency, watch the first few minutes of the following 51-minute video: --
Diagnosing and Treating Vitamin B12 Deficiency. I have to think at least some people's tinnitus severity could be improved with Vit. B12 injections.
Hydroxyl Vit. B12 Testimonial