Darden Restaurants is facing pressure from investors today at its annual shareholder meeting to eliminate the routine use of antibiotics in its supply chain.

Darden owns and operates more than 1,500 restaurants that generate $6.9 billion in annual sales. Its restaurant brands include Olive Garden, LongHorn Steakhouse, Bahama Breeze, Seasons 52, The Capital Grille, Eddie V's and Yard House.

The shareholder proposal, presented by Green Century Capital Management, comes after Darden was sent a letter signed by a coalition of investors urging the company to end the routine use of antibiotics important to human medicine in its global meat and poultry supply chains.