ConsumerLab.com uses JavaScript to provide the best possible experience for our content, but your browser has it disabled. Learn how to enable it here.

About ConsumerLab.com

Posted December 31, 2020

FDA Warns Seller of Flu Immune

On December 21, 2020, the FDA issued a warning letter to Riverstone LLC for selling the products Flu Immune Drops, L-Lysine, Lysine Extra, and Monolaurin with unsupported claims that they can treat coronavirus (COVID-19).

The FDA has previously stated: "There currently are no vaccines, pills, potions, lotions, lozenges or other prescription or over-the-counter products available to treat or cure coronavirus disease 2019 (COVID-19)."

Riverstone products were promoted with statements such as "L-Lysine... Helps boost immune system response to fight viruses and bacteria that lead to illness... L-Lysine 500 mg by Ecological Formulas features Lysine as its key ingredient, an essential amino acid that helps the body in fighting viruses."

See ConsumerLab's Lysine Supplements Review for tests of related products.

Also see ConsumerLab's answer to the question What are natural remedies for coronavirus (COVID-19)? Do supplements like zinc, vitamin C, or herbals work?

The FDA instructed the company to send an email to COVID-19-Task-Force-CDER@fda.hhs.gov within 48 hours of receipt of the warning, describing the specific steps it has taken to correct these violations.

For more information, use the link below.

Warning Letter: Riverstone LLC

See Related Warnings:

Indigenous Products Warned for COVID-19 Claims

Seller of Vitamin C, Elderberry, Silver, and More Warned for COVID-19 Claims

Niagen Cannot Be Promoted to Prevent or Treat COVID-19, Warns FDA

Silver Cannot Be Promoted to Prevent or Treat COVID-19

Seller of Vitamin C, Vitamin D, Ashwagandha, and More Warned for COVID-19 Claims

Seller of Elderberry and Honey Products Warned for COVID-19 Claims

Seller of Vitamin C, Vitamin D, Ashwagandha, and More Warned for COVID-19 Claims

Prairie Dawn Herbs Warned for COVID-19 Claims