Can I use Sustained Energy or Perpetuem in a hydration pack?

Can I use Sustained Energy or Perpetuem in a hydration pack?

You could, but we don't recommend this practice. First, neither Perpetuem nor Sustained Energy contain any preservatives, and as a result, the protein component tends to separate after awhile and may settle on the bottom if the mixture is not agitated on occasion. Keeping a carbohydrate/protein fuel thoroughly mixed can be difficult to do when using a hydration pack. Also, when you mix the product in a water bottle, you're better able to see exactly how much you're consuming. Lastly, cleaning the bladder of any hydration pack is substantially easier when you use it for drinking water only. Our recommendation is to use water bottles to mix Sustained Energy and Perpetuem and hydration packs for water only.