A South Portland company that sold vitamin and mineral supplements has settled a lawsuit filed by the Federal Trade Commission over its allegedly deceptive marketing practices, according to federal court documents.

Health Research Laboratories LLC and owner Kramer Duhon of Dallas deceived consumers with promises that their products could treat everything from arthritis to memory loss, according to the Maine attorney general’s office, which joined the FTC in the lawsuit filed in U.S. District Court in Portland.

The proposed settlement order imposes a judgment of $3.7 million. If the company pays $800,000 in restitution, it will not have to pay the remaining $2.9 million.