Medifast, Inc. provided earnings guidance for the full year 2021. The company expected full-year 2021 revenue to be in the range of $1.51 billion to $1.53 billion and full-year 2021 EPS to be in the range of $13.27 to $13.96. The full-year 2021 earnings guidance assumes a 23.25% to 24.25% effective tax rate.