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  1. Little to no benefit
    Vitamin C has been studied for many years as a possible treatment for colds, or as a way to help prevent colds. But findings have been inconsistent. Overall, experts have found little to no benefit from vitamin C for preventing or treating the common cold.

    Vitamin C for Colds: Benefits, Side Effects, Uses - WebMD

    www.webmd.com/cold-and-flu/vitamin-c-for-common-cold
    www.webmd.com/cold-and-flu/vitamin-c-for-common-cold
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  2. 其他用户还问了以下问题
    Can vitamin C prevent a common cold?
    Common cold. Taking oral vitamin C supplements won't prevent the common cold. Evidence also shows that the benefits of regularly taking vitamin C supplements to reduce the duration or severity of a cold are minimal. Eye diseases.

    Vitamin C - Mayo Clinic

    mayoclinic.org
    What vitamins are in cold remedies?
    The most common ingredient in cold remedies is vitamin C, though blends of vitamins A, B, C, D and E are also common. Many cold remedies also contain minerals such as: Selenium. Zinc. Calcium. Phosphorus. Magnesium. Some cold remedies contain herbal supplements in addition to vitamins.

    Best Cold Medicines: 7 Pharmacist-Ranked Brands for 2024 | US News H…

    health.usnews.com
    How long does a cold last if you take vitamin C?
    In other words, a cold that would have lasted ten days was over in nine days. The cold symptoms were also a bit milder in people who always took vitamin C. Other studies show that taking vitamin C only after becoming ill didn’t shorten the length of colds in men and women. It didn’t relieve their symptoms, either.

    Common colds: Research summaries – Does vitamin C prevent colds?

    ncbi.nlm.nih.gov
    Can a vitamin C deficiency cause a cold?
    Vitamin C is essential for the proper functioning of immune cells. It is depleted during infections, so a vitamin C deficiency may increase their risk. There is no cure for the common cold. However, some foods and nutrients can help the body recover. In the past, people have used various foods to reduce their symptoms.

    Can Vitamin C Prevent or Cure Colds? - Healthline

    healthline.com
    Does vitamin C (ascorbic acid) prevent and treat the common cold?
    Cochrane Database Syst Rev. 2013 Jan 31;2013 (1):CD000980. doi: 10.1002/14651858.CD000980.pub4. 1 Department of Public Health, POB 41, University of Helsinki, Helsinki, Finland. harri.hemila@helsinki.fi. Background: Vitamin C (ascorbic acid) for preventing and treating the common cold has been a subject of controversy for 70 years.

    Vitamin C for preventing and treating the common cold - PubMed

    pubmed.ncbi.nlm.nih.gov
    What are the ingredients in cold remedies?
    The ingredients in cold remedies vary between products, and some contain a combination of ingredients for treating colds. The most common ingredient in cold remedies is vitamin C, though blends of vitamins A, B, C, D and E are also common. Many cold remedies also contain minerals such as:

    Best Cold Medicines: 7 Pharmacist-Ranked Brands for 2024 | US News H…

    health.usnews.com
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    • Emergen-C
      https://www.emergenc.com › Products › Vitamin_C
      Learn More

      Vitamin C for Immune Support | Daily Immune Support*

  4. Mayo Clinic
    https://www.mayoclinic.org › diseases-conditions › ...

    Cold remedies: What works, what doesn't, what can't hurt

    • Cold Remedies

      علاجات البرد شائعة تمامًا مثل حدوث نزلات البرد، لكن هل هي فعالة؟ لا شيء يمكن أن يعالج نزلات البرد. ومع ذلك قد تساعد بعض …

    • 简体中文

      维生素 C。通常情况下服用维生素 C 似乎不能帮助普通人预防感冒。 但是，一些研 …

    • Vitamin C

      Taking oral vitamin C supplements won't prevent the common cold. Evidence also …

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  5. WebMD
    https://www.webmd.com › cold-and-flu › vitamin-c-for-common-cold

    Vitamin C for Colds: Benefits, Side Effects, Uses - WebMD