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It depends. A lot of companies use soy protein in their drinks. The newer, more expensive shakes like Muscle Milk use whey isolate so it's basically a whey shak
by jschwartzi 8y ago
It depends. A lot of companies use soy protein in their drinks. The newer, more expensive shakes like Muscle Milk use whey isolate so it's basically a whey shake with some soluble fiber in it.
- grendelt 8y ago...and the whey comes from: ____