The city health department's new sodium warning rule went into effect Tuesday.

The rule applies to chain restaurants that have 15 or more locations in the U.S.

But not everyone is on board with the way it works, some restaurants are saying the city has gone too far.

A miniature salt shaker symbol will be placed next dishes containing more sodium than the recommended daily intake of 2,300 milligrams.

While most are accepting of the new icon, the National Restaurant Association is planning to file a lawsuit against it.

A spokesperson for the National Restaurant Association says the health Deparment is "dealing yet another blow to many of New York's small businesses that have been working hard to provide nutritional access to their customers." He adds, "This latest assault goes too far, too fast for New York's restaurant community."

The spokesperson says the FDA already requires calorie and sodium counts to be provided on menus, but only upon request.

The first lawsuit is expected to be filed this week.

Restaurants have 90 days to add the salt warning labels to their menus. Beginning March 1, any restaurant not following the rule could be fined $200.

However, this will not affect their letter grade.