Consumer-products giant Procter & Gamble Co., which successfully sued four Amway distributors to dispel rumors of devil-worshipping, is asking a federal judge to uphold a multimillion-dollar award despite allegations of jury misconduct.

Lawyers for the Amway distributors obtained statements from three jurors who said the full panel decided after last month’s trial that P&G failed to show it lost sales because of the rumors and didn’t deserve a damage award.