A class action lawsuit is alleging that Fixodent denture cream may have caused serious problems.

ABC News reported that lawyers for two former denture cream users are accusing Proctor & Gamble of manufacturing a product that made their clients extremely ill.

Mark Jacoby, a 41-year-old construction worker who wore dentures for 20 years, told ABC News that he believes his debilitating neurological illness is due to the high zinc content in his Fixodent.

"I started getting tingling in my fingertips. And then it started happening in my toes," he told ABC News' 20/20 anchor Chris Cuomo, who is the Chief of the Law & Justice Unit. "I started getting weaker and, you know, I couldn't walk right, off balance and I'm at this point now."

He said his doctors searched for years for the cause of his debilitating neurological illness that robbed him of his independence.