Dozens of illnesses across 28 states are now linked to a company's 'microdosing' gummies and chocolate bars

• More than five dozen people reported seeking medical attention after consuming Diamond Shruumz products.
• A study also found some of the company's gummies contained psilocin, a controlled substance.

Diamond Shruumz, the company whose microdosing chocolate bars prompted a Food and Drug Administration investigation in June, has also sold gummies made with an illegal substance, according to a new report from the Centers for Disease Control and Prevention.

The FDA first alerted the public about Diamond Shruumz products after eight people in four states fell ill from consuming the retailer's microdosing chocolate bars.

As of July 15, the FDA said, those numbers had ballooned to 69 illnesses across 28 states.

"Sixty (60) of the 69 people have reported seeking medical care, 36 have been hospitalized, and there is one potentially associated death under investigation," the FDA said.

Microdosing is the practice of taking small doses of a drug, typically psychedelics such as psilocybin, to improve creativity and mental health. Microdosing has become trendy in Silicon Valley, even among CEOs.

Diamond Shruumz's website said its products didn't contain psilocybin or any other scheduled drugs.

But tests conducted by the University of Virginia Health Toxicology Laboratory found psilocin in Diamond Shruumz's Sour Peach Apple and Rainbow gummies.

Psilocin is a "psychedelic mushroom alkaloid," according to The Metabolomics Innovation Centre. The Drug Enforcement Administration considers psilocin a Schedule I controlled substance in some states, including Virginia, where the study was conducted.

The CDC study says five people underwent hospital evaluations from September to June after eating gummies labeled to contain Amanita muscaria.

Although Amanita muscaria can sometimes cause undesired symptoms, the report says it's legal.

"Persons who purchase products advertised as psychedelic or nootropic mushroom gummies should be aware that package labels might not accurately represent the contents and that these products could contain substances that might produce unexpected and potentially toxic effects," the report says.

Representatives for Diamond Shruumz and the University of Virginia Health Toxicology Laboratory didn't respond to a request for comment from Business Insider.

Diamond Shruumz recalled all of its products — including its gummies and chocolate bars — in June after illnesses continued to rise across the country.

The FDA said it would monitor Prophet Premium Blends, the company behind Diamond Shruumz, during its recall.

"Consumers should not purchase or consume any Diamond Shruumz-brand products," the agency added.