Solgar B12 Vitamins 1000mcg, 100 or 250 chewable nuggets

Vitamin B12 deficiency causes fatigue. Years ago, a small, double-blind trial reported that even some people who are not deficient in this vitamin had increased energy after vitamin B12 injections, compared with the effect of placebo injections.¹ In recent years, however, the relationship between B12 injections and the energy level of people who are not vitamin B12-deficient has been rarely studied. In a preliminary trial, 2,500–5,000 mcg of vitamin B12, given by injection every two to three days, led to improvement in 50–80% of a group of people with chronic fatigue syndrome (CFS), with most improvement appearing after several weeks of vitamin B12 shots.² The ability of vitamin B12 injections to help people with CFS remains unproven, however. People with CFS interested in considering a trial of vitamin B12 injections should consult a doctor. Oral or sublingual (administered under the tongue) B12 supplements are unlikely to obtain the same results as injectable.

 

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