Michelob Ultra Zero is now the No. 1 non-alcoholic beer brand by volume in off-premise scans tracked by Circana for the 12-week period ending February 8, Anheuser-Busch InBev shared this week. A-B hailed the brand as the “fastest-growing” NA beer in the industry. Although Michelob Ultra Zero is the top NA volume brand, it trails Heineken 0.0 in dollar sales.