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To help separate the good from the bad, we asked Alexa Mullane to share her recommendations on the best vitamin B12 supplements to buy, along with advice on how to take them
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If you intended to add 1mL but accidentally added 2mL, your concentration is half of what you planned
Steps to begin reversing B12 deficiency hair loss: Get tested: Blood tests to check B12 and related markers like folate and iron
