Mealey's (October 5, 2015, 12:00 PM EDT) -- WASHINGTON, D.C. — The U.S. Supreme Court on Oct. 5 denied a petition for a writ of certiorari by a pro se plaintiff who argued that experts in his Zicam injury lawsuit were improperly excluded (Michael D. Nelson v. Matrixx Initiatives, et al., No. 14-1389, U.S. Sup.).

In 2009, Michael D. Nelson sued Matrixx Initiatives Inc. and subsidiary Zicam LLC (collectively, Matrixx) in the Contra Costa County, Calif., Superior Court, alleging that he lost his sense of smell after using Zicam, a zinc-based, nonprescription cold remedy...