Super-smoother for wine

Hello,

I am in the final stages of making some grape-wine. I have two gallons. I recently purchased a pouch of "Super-smoother for wine". The product lable says "One pouch will smooth out and mellow six gallons of wine". Each pouch contains 15 mL of Sinatin 17 and glycerin. Is there any disadvantage in adding the whole pouch to the 2 gallons or should i measure out 5 mL for my two gallons.

Thanks

Dada