A State Supreme Court Appellate Division Panel upheld the rule in New York city.
The regulation requires a salt-shaker-like icon for any chain restaurant dish with more than a full day's recommended dose of sodium. That's 2,300 milligrams, or about a teaspoon.
Appeals judges agreed with a lower court that the city board of health has the power to require the warning.
The National Restaurant Association says it's examining options for its next move. The group calls the regulation ``a costly and onerous burden.''
The regulation took effect in December of 2015. Fines were held off until last June.
Photo Credit: Getty Images