In the past two years, a number of Praya supplements have been found to contain synthetic versions of the natural amino acids arginine and methionine, the company said.
Some of the supplements were marketed as dietary supplements, but they contain no real nutritional value, said Praya CEO Andrew L. Oleros.
“These products are not meant to be used as dietary supplement and may be contaminated,” he said.
The company said it is working with the FDA to identify the products and has contacted the U.S. Food and Drug Administration to request a halt to their distribution.
But the company declined to specify which dietary supplements were affected.
Oleg Gusev, chief executive of the Ussuri foundation, said in a statement that he was “shocked” by the news.
He added that Praya has already launched an investigation into the matter and is working to get answers from the company.
A spokeswoman for the FDA did not immediately respond to a request for comment.
Praya is one of several companies that have been caught up in a growing controversy over the nutritional content of supplements, with critics questioning the safety of supplements.
The FDA has issued dozens of warnings and recalls, including for products containing synthetic versions.
Praysu’s products are often made in a lab by hand and do not contain a nutritional value.
The products often come with warnings that they may contain synthetic amino acids, including arginin, methionin, and phenylalanine, and are often labeled as dietary.
The Ussuralis foundation says the company is “selling supplements that are not intended for consumption, but instead used for human consumption” and is “not providing an alternative source of dietary protein” to the human diet.
Some critics of supplements say the synthetic versions pose health risks because they mimic the amino acids found in the natural foods that they are intended to promote.
In a report published last month in the Journal of the American Dietetic Association, researchers found that synthetic amino acid supplements were linked to a greater risk of developing osteoporosis in laboratory animals.
The findings raised concerns that synthetic supplements were being marketed as “natural” dietary supplements.
“The risk of adverse effects from synthetic amino supplements is not known, but it is a serious concern for anyone who wants to take dietary supplements,” the authors wrote.
The agency did not issue any public safety alerts in response to the report.
But Olerys said that “we are going to work closely with the agency to see if we can put these products in a category that is safe and acceptable for human use.”
In a statement, Prayshuas spokesperson said it was “working with the Food and Cosmetic Inspection Service to determine whether the products in question are in compliance with regulations and that the products are safe and approved for human ingestion.”
The company has said it plans to appeal the FDA’s order, and said it would review the findings in detail and take any necessary action.
“We have an obligation to do the right thing for our customers, and this is a major step in that process,” Oleries said.
“As we have stated before, we have never knowingly used any of our products in unsafe or ineffective ways and we are working closely with our suppliers to get the products out of our system and into the marketplace.”
The FDA said in its recent report that the company “has engaged in fraudulent marketing practices to falsely advertise its products, and we continue to pursue the necessary action.”
Praysuris did not respond to multiple requests for comment on the FDA report.
In addition to its products labeled as supplements, Prayersuas has also sold dietary supplements made from ingredients that resemble amino acids such as arginus, methylamine, pyridoxine, or glutamine.
The supplements have also come under scrutiny by some scientists because they do not appear to contain any nutritional value and contain artificial ingredients, including ingredients that have not been tested for safety.
The Natural Resources Defense Council, an environmental advocacy group, called the company’s products “dangerously contaminated” and said Praysuranis should be “put on notice.”
The NRDC also said the products should not be sold as dietary products.
“Prayer is the food that nourishes our bodies and souls,” the group said.
Prayersuris has said that it has no ties to any pharmaceutical companies and that its products are free of any synthetic amino ingredients.
The group also said that Praysurus products are made in the United States, which is why they should not pose a health risk.
Prayeruas said in April that its U.K.-based parent company, Prayosuris International, is now working with regulators in the U, U.A., and U.B.E. on the matter.
The companies said it has notified all affected consumers that they have been notified.
“With the new information that has come to light in the past few months, we are looking into our future with regard to this