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The Federal Trade Commission announced it has sent 45 more letters warning marketers nationwide to stop making unsubstantiated claims that their products and therapies can treat or prevent COVID-19, the disease caused by coronavirus. This is the fourth set of warning letters the FTC has announced to sellers of such products as part of its ongoing efforts to protect consumers from COVID-19 related scams. In all, the Commission has sent similar letters to almost 100 companies and individuals.

The FTC previously sent warning letters to sellers of vitamins, herbs, colloidal silver, teas, essential oils, and other products pitched as scientifically proven coronavirus treatments or preventatives.intravenous (IV) “therapies” with high doses of Vitamin C, ozone therapy, and purported stem cell treatments.

Several of the letters announced today target other “treatments,” including Chinese herbal medications, sound therapy, homeopathic treatments, and even shields claimed to boost the immune system by protecting the wearer from electromagnetic fields. However, there is currently no scientific evidence that these, or any, products or services can treat or cure coronavirus.

The FTC sent the letters announced today to the companies and individuals listed below. The recipients are grouped based on the type of therapy, product, or service they pitched to supposedly prevent or treat COVID-19.

General Therapy Products, Supplements, Drugs, and Chinese Herbal Treatments:

IV Therapy and Vitamin C Therapy:

Air Purifiers/Sanitizers and Water Filters:

Chiropractic Therapy:

EMF Radiation Protection:

Homeopathic Treatments:


Ozone Therapy:

In the letters, the FTC states that one or more of the efficacy claims made by the marketers are unsubstantiated because they are not supported by scientific evidence, and therefore violate the FTC Act. The letters advise the recipients to immediately stop making all claims that their products can treat or cure COVID-19, and to notify the Commission within 48 hours about the specific actions they have taken to address the agency’s concerns.

The letters also note that if the false claims do not cease, the Commission may seek a federal court injunction and an order requiring money to be refunded to consumers. Last week, the FTC announced its first case against a marketer of such products, Marc Ching, doing business as Whole Leaf Organics.

The Commission also has sent letters to several Voice over Internet Protocol (VoIP) service providers, warning them that it is illegal to aid or facilitate the transmission of pre-recorded telemarketing robocalls pitching supposed coronavirus-related products or services, as well as to multi-level marketers business opportunities with unsupported earnings claims and unsubstantiated claims that their products or services can treat or cure coronavirus.

The Federal Trade Commission works to promote competition and protect and educate consumers.  The FTC will never demand money, make threats, tell you to transfer money, or promise you a prize. Learn more about consumer topics at, or report fraud, scams, and bad business practices at Follow the FTC on social media, read consumer alerts and the business blog, and sign up to get the latest FTC news and alerts.

Contact Information

Consumer Response Center

Mitchell J. Katz
Office of Public Affairs

Richard Cleland
Bureau of Consumer Protection