San Francisco is set to become the first city in the United States to ban the sale and distribution of e-cigarettes.

The city's board of supervisors is slated to vote and pass the measure Tuesday

The ordinance would prohibit the sale of e-cigarettes and flavored tobacco products in brick and mortar stores and on-line when shipping to addresses in San Francisco, at least until the FDA approves marketing regulations on the products.

However, people 21-years of age and older can still use e-cigarettes.

Juul Labs, the largest manufacturer of e-cigarettes, is headquartered in San Francisco.

The city's mayor says she will sign the ordinance if it passes and enforcement would begin early next year.