(generic supplement)
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“I'm taking the supplementation which I mentioned which is the collagen often with whey protein and vitamin C prior to any type of straining or training”— Tim Ferriss
“yeah, I do take collagen. ... About 15 grams a day. ... To me, it's kind of a no-brainer.”— Alan Aragon
“what other supplements that I personally take collagen I love collagen mhm collagen in my coffee”— Gabrielle Lyon