They are all very similar, except that Glucerna is significantly lower in sugar. Ensure and Glucerna are lactose free, the others are not. I believe, but am not certain, that Glucerna is the only one that is gluten free. So those with diabetes are probably best off with Glucerna, and anyone else can choose what tastes best to them.
“They gave me Ensure in the hospital, so that’s the one I want!” Uh-huh. That’s because Ensure sells hospitals pallets of Ensure for pennies. They can’t quite get away with giving them free anymore (that’s how Tylenol became “the number one choice of hospitals”), but they make the deal so sweet that they’re the most commonly stocked. There’s nothing better (or worse) about Ensure brand.
Boost
Per 237 mL
Calories 240
Calories from Fat 35
Protein 10 g
Total Fat 4 g
Sugars 20 g
Fiber 3 g
Ensure
Per 8 ounces (237 mL)
Calories 220
Calories from Fat 50
Protein 9 g
Total Fat 6 g
Sugars 15 g
Fiber 1 g
Glucerna
Per 237mL
Calories 190
Calories from Fat 60
Protein 10 g
Total Fat 7 g
Sugars 6 g
Fiber 3 g
Slim-Fast (Rich Chocolate Royale)
Per 295 mL
Calories 190
Calories from Fat 54
Protein 10 g
Total Fat 6 g
Sugars 18 g
Fiber 5 g
Carnation Breakfast Essentials Drink (Ready to Drink, Rich Milk Chocolate)
Per 8 ounces (237 mL)
Calories 240
Calories from Fat 36
Protein 10 g
Total Fat 4 g
Sugars 15 g
Fiber 0 g
Carnation Instant Breakfast, Rich Milk Chocolate, prepared with 1 cup skim milk
Per 8 ounces (237 mL)
Calories 220
Calories from Fat 27
Protein 13 g
Total Fat 3 g
Sugars 32 g
Fiber <1 g
Snickers Bar
Per 1 regular sized bar
Calories 250
Calories from Fat 108
Protein 4 g
Total Fat 12 g
Sugars 27 g
Fiber 1 g
So…more fat in a Snickers bar, and less protein. Same ballpark amount of sugar, however, which is something of a wake up call to many people, particularly people with diabetes who are drinking shakes other than Glucerna and not accounting for them when bolusing insulin.