I think that should be based on your dietary requirements and what amino acid and vitamin gaps you are trying to fill. There are breakdowns of the vitamin cont

I think that should be based on your dietary requirements and what amino acid and vitamin gaps you are trying to fill. There are breakdowns of the vitamin content somewhere on their site and I think I also found it in the Amazon questions section. I use 6 when I only have protein shakes but I use less when I eat a complete meal. That is just my personal preference.