Heineken's first-half net revenue fell 16.4% as the impact of coronavirus-related lockdowns intensified in the second quarter, the Dutch beer maker said in an unscheduled preliminary release.
The figures sent its shares down more than 5% in early trade.
The fall was driven by a 13.4% organic decline in total consolidated volume and a 3.6% drop in net revenue per hectolitre, the world second-largest brewer said.
Beer volumes also dropped 11.5% in the first-half of 2020, the company added.
"After a low point in April, volume started to gradually recover into June as lockdowns were lifted around the world and customers restored depleted inventories," Heineken said, adding that beer volumes were most affected in the Americas, Africa, the Middle East and Eastern Europe.
The company's January-June preliminary operating profit and net profit plummeted by 52.5% and 75.8% respectively, it said.
Heineken's Danish rival Carlsberg said last week it had seen a smaller than forecast drop in first-half operating profit as its key Chinese market rebounded strongly during the second quarter.
Heineken said its operating profit was "disproportionately" affected by restaurant and bars closures in the crisis.
It said it had booked €500m in exceptional items on impairments for tangible and intangible assets, without giving details.
Heineken is due to report its final first-half results on August 3.
