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Some formulations may require refrigeration

Vegetarian sources of B12 include chlorella, nori, nutritional yeast and certain mushrooms, but many vegans and vegetarians have insufficient levels of B12 because its not widely found in plants. According to Mullane, not getting enough B12 can result in issues like anaemia, fatigue and more intense symptoms including shortness of breath, palpitations, pale skin, muscle weakness, numbness and tingling in hands or feet, blurred vision and memory loss

Larger follicles produce thicker, more robust strands

Lipotropics can improve your livers ability to use nutrients for energy

If you are not deficient, I believe it is safe to take a B12 supplement at a lower dose