10 Remedies That Do Absolutely Nothing to Treat the Common Cold

Vitamin D
Vitamin D (often paired with calcium in supplements) provides a wide range of health benefits, but it's probably not going to help you prevent or get over a cold. ©Denise Bush/iStockphoto.com

Vitamin D (paired with calcium) is important for bone health, and preliminary research suggests it may also play an important role in preventing cancer, preventing infection, reducing chronic pain and reducing our risk of developing autoimmune diseases. It may also provide cardiovascular benefits. And vitamin D supplements do play a beneficial role in boosting your immune system.

While the verdict is still out about vitamin D's role in many of those conditions, we do know that it does nothing at all to prevent, treat or reduce the duration of upper respiratory infections -- including the common cold -- according to recent findings published in the Journal of the American Medical Association [source: Linder].