Coronaviruses are a large family of viruses. Some cause illness in people, and others cause illness in certain types of animals. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the new strain of coronavirus that causes coronavirus disease 2019, or COVID-19. Sometimes coronaviruses that infect animals can evolve and make people sick and become a new human coronavirus. Three recent examples of this are SARS-CoV-2, SARS-CoV, and MERS-CoV.

The media has reported that some people are seeking “alternative” remedies to prevent or to treat COVID-19. Some of these purported remedies include herbal therapies, teas, essential oils, tinctures, and silver products such as colloidal silver. There is no scientific evidence that any of these alternative remedies can prevent or cure the illness caused by COVID-19. In fact, some of them may not be safe to consume.1,2 It’s important to understand that although many herbal or dietary supplements (and some prescription drugs) come from natural sources, “natural” does not always mean that it’s a safer or better option for your health. For tips on how to find accurate, reliable information about health, visit our Know the Science resources. 

While scientists at NIH and elsewhere are evaluating candidate therapies and vaccines to treat and prevent the novel coronavirus, currently there are no treatments or vaccines for COVID-19 infection approved by the U.S. Food and Drug Administration. Researchers are studying new drugs, and drugs that are already approved for other health conditions, as possible treatments for COVID-19. The best way to prevent infection is to avoid exposure to the virus. The Centers for Disease Control and Prevention (CDC) also recommends everyday preventive actions to help prevent the spread of this and other respiratory viruses, including the following:

  • Clean your hands often.
  • Avoid close contact.
  • Cover your mouth and nose with a cloth face cover when around others.
  • Cover coughs and sneezes.
  • Clean and disinfect frequently touched surfaces.

Follow the instructions of your state and local authorities and current guidance regarding social distancing and other measures to reduce the spread of coronavirus.

If you have a fever or cough, you might have COVID-19. Most people have mild illness and are able to recover at home. If you have traveled to high risk countries or regions or were in close contact with someone with COVID-19 or think you may have been exposed to COVID-19, contact your health care provider immediately.  

  • Keep track of your symptoms.
  • If you have an emergency warning sign (including trouble breathing), get medical attention right away.

More Resources

1U.S. Food and Drug Administration. Coronavirus Update: FDA and FTC Warn Seven Companies Selling Fraudulent Products That Claim To Treat or Prevent COVID-19. March 9, 2020.
2Coghlan ML, Maker G, Crighton E, et al. Combined DNA, toxicological and heavy metal analyses provides an auditing toolkit to improve pharmacovigilance of traditional Chinese medicine (TCM). Scientific Reports. 2015;5:17475.