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Vitamin D supplements are widely used for bone health and immunity, but excessive intake can lead to silent side effects.

Fact checked by Jennifer Klump If you're trying to figure out which supplements are actually worth it, or how to optimize ...

If you're considering a vitamin B12 supplement because of certain dietary restrictions, medical conditions or your age, this ...

Learn which supplement is best for preventing and treating respiratory viruses, how to take them, and side effects to watch ...