Review on BSG 849731002187 Fermax Yeast Nutrient by Jihye Rivera

I ruined three batches of cider with this junk. I make an appetizer with just juice and yeast, then when it's very active I add it to 5 gallons of juice with added sugar and this yeast nutrient (1 teaspoon per gallon as directed on the package) and I get nothing or very slow fermentation . The same process without nutrients worked very well. The product is poorly packaged (arrived in a torn bag that was scattered throughout the Revain envelope) and falls apart when shaken. It contains solids that do not dissolve. Not sure what's in it, but it's more of a yeast poison than a nutrient. It also smells awful.