Health Canada is investigating a controversial American who claims to cure cancer with wheat grass suppositories and a diet of raw vegan foods.

Brian Clement, of the Florida-based Hippocrates Health Institute, is being investigated over allegations he is selling unlicensed health products in Canada.

In an email exchange, Health Canada spokesperson Maryse Durrette said the department has not licensed any the LifeGive brand products Clement is offering for sale during an Ontario tour due to wrap up this week.

[ "He targets people who have cancer:" Head of controversial clinic visiting Six Nations ]

"While we have not received any consumer complaints regarding LifeGive supplements, Health Canada is now following up with the information provided through media reports and is processing it as a complaint," Durrette wrote. "Health Canada has not issued any Natural Health Product Licences for any product containing the name LifeGive in the brand name nor to a company called Hippocrates Health Institute.

"Health Canada is committed to addressing complaints about health products, and will take appropriate action should it be determined that non-compliant products are being sold in Canada."

The department maintains an online database listing products that have been licensed in Canada. Licensing ensures the ingredients in any supplement are safe for humans and that no claims of miracle cures are made.

Health Canada recommends people consult their family doctor when starting a supplement regimen. Concerns about the safety or quality of health products can be reported using the department's health products complaint form at hc-sc.gc.ca.

Clement, who appeared at a health and wellness fair at the Six Nations reserve on the weekend, gained notoriety in Canada when two Native girls with leukemia abandoned chemotherapy in Hamilton in favour of his treatments in addition to traditional Native medicine.

He refused requests for an interview and an email to his executive assistant Monday was not returned.

One died early in 2015 and the other has returned to chemotherapy.

Clement's products are sold mainly online from his Florida base. An Internet survey of a sample of the 218 health food stores in Hamilton and area found none carrying the brand.