I would highly recommened to do that. First, it saves money, second YOU can decide how many carbs and protein you want in your blend - sometimes you want a different ratio than the product you´d chosen has.
I personally use the Whey Protein Concentrate from TrueProtein.com and looking to get my ion exchange whey for post workout soon (should be here every day). Save some bucks with the code in my sig and their 50 lbs special - you´ll need 50 lbs anyway. you wont regret it

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