On Web sites and in sales pitches, nutritional supplements from Mannatech Inc. are said to treat and even cure everything from attention deficit disorder to cancer.

Such claims, as described by consumers in complaints to the Federal Trade Commission obtained by The Dallas Morning News, would be illegal under federal regulations for dietary supplements.

Mannatech has attracted attention from miracle seekers here and abroad – as well as from the Texas attorney general’s office, which revealed in October that it is investigating the company.

WFAA.com | Business