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Negative side effects occur rarely and include a decrease in energy levels (which happens in about 2-3% of my patients)
10.1177/15648265080292S129 16 DelRe A
The risk of reduced potency or contamination is not worth the savings from squeezing out a few extra doses
Vitamin B12, Fact Sheet for Health Professionals, National Institutes of Health, Office of Dietary Supplements Common questions about hydroxocobalamin, NHS (National Health Service), Hunt A, Harrington D, Robinson S
A low level of vitamin B12 will present itself in several ways
B12 is also essential for your body to make the red blood cells that carry oxygen to your organs
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