I looked at their website.

Ensure High Protein has one gram LESS protein than Ensure Plus or Ensure Muscle Health.

I don't expect the magic ingredient, HMB, in Muscle Health to do much,
but I am a sucker for that sort of thing. So I'll try it.

I don't know where you'd get it, but it also comes as a powder.

And I was right, it's mostly sugar, a blend of corn syrup and sugar.