Common Cold Should You Take Vitamin C?
Recently on a business trip to the U.S., I happened to visit a relative whose child had a cold. Since I was driving to the supermarket, I picked up some vitamin C supplements for the child. But then I wondered—when did doctors and pharmacists in Taiwan and the U.S. start advising people with colds to take more vitamin C? I’ve heard it can speed up recovery, and even pharmaceutical companies have claimed this benefit on their labels. But is there any scientific basis?
Those familiar with biochemistry know that Linus Pauling, a two-time Nobel laureate from the 1970s, was the pioneer behind vitamin C research. In his later years, he focused almost exclusively on vitamin C’s potential anti-cancer and cold-fighting effects. Unfortunately, his findings didn’t achieve the same recognition as his earlier work and sparked considerable controversy. He himself took high doses of 2–4 grams of vitamin C daily, personally testing its effects. Laboratory studies show vitamin C does enhance immune function at the cellular level, but this doesn’t necessarily mean it works the same way in humans. While it may seem logical to assume such benefits in real life, clinical evidence remains lacking.
So, does taking more vitamin C really help fight off colds? This question remains uncertain. Numerous international clinical reports indicate no significant difference in cold symptoms whether or not vitamin C is taken. If you do choose to take vitamin C, 200–500 mg per day is sufficient—no need to consume 500 mg or several grams like Dr. Pauling. In fact, excessive intake may lead to blood acidification and increased risk of kidney stones. Simply drink plenty of water, rest adequately, and your body’s natural immune system will restore you. There’s no need to buy unnecessary medications or worry excessively.<感冒>