Flu A and flu B are the most common strains of the flu that circulate in humans. The U.S. is currently in the middle of flu season, with a high number of cases reported across the country. There are ...
Everyday Health on MSN
Biotin and D-Biotin: What's the Difference?
Most biotin supplements, no matter how they’re labeled, contain d-biotin, which is the form of biotin, or vitamin B7, that is the most active.
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