2. Effectiveness of Vitamin C on Cold Symptoms
While vitamin C has garnished a rep for warding off colds, there’s a void of scientific studies that can actually prove the vitamin’s effectiveness. In fact, much of the research is largely inconsistent and inconclusive.
For instance, a 2007 clinical study noted by WebMD was unable to prove that 200-milligrams of vitamin C taken daily had any effect whatsoever in efforts to reduce the frequency and symptoms of a cold. The study further notes that vitamin C was only able to reduce cold duration by a measly 8-percent at best.