AFAIK Denny is right, that's one of the products intended for wine, mead and cider that need the nitrogen compounds. Beer wort has adequate nitrogen. Another clue is, the LD Carlson product tells you how much to add per gallon of MUST. You want a complete beer yeast nutrient like Wyeast's or BSG's Fermax (not to be confused with Lallemand Fermaid, which is nitrogen only again,) or Servomyces which just provids zinc (and lightens your wallet.)
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