• What products are effective for treating flu?
• Which supplements are effective for preventing flu?
• What natural products prevent colds?
• What herbals treat colds?
• What supplements should be avoided?
• Who should avoid supplements?
• Can elderberry (Sambucol) be recommended for flu prevention?
• Does vitamin D or Oscillococcinum work for treating flu?
• What other supplements are used to prevent flu?
• Are these products really effective?

When flu season begins, healthcare professionals commonly are asked about natural remedies for prevention or treatment of colds and flu. This article reviews information on the efficacy and safety of common products patients might inquire about.