PDFWAC 314-20-022
Alcohol energy drinks.
(1) No product that combines beer, strong beer, or malt liquor with caffeine, guarana, taurine, or other similar substances, which are commonly referred to as "alcohol energy drinks," may be imported into the state, produced, manufactured, distributed, sold or offered for sale by a licensed retailer in the state of Washington.
(2) Beer, strong beer, or malt liquor with coffee, chocolate, or other natural substances used for flavorings, are not prohibited under this section.