Customers find the protein drink contains as much protein as 15oz of milk and provides 125mg of caffeine, while being filling at just 70 calories. They appreciate its drinkability, noting it hydrates well and keeps them awake, and consider it good value for money. The taste receives mixed feedback, with some enjoying the several flavor options while others find it too sweet, and the overall quality is also mixed, with some finding it effective while others consider it mediocre.