Glutamine with protein?

Is it alright to add 2 tbsp of glutamine (10 g) to my protein shake with some flax before I go to bed? I heard glutamine competes with whey for absorbtion. I take Problend 55 which is a time release protein (it has whey and casein).

Also, if I'm taking 1-3 protein shakes a day, is it NECESSARY to use glutamine powder and BCAA caps? Am I just wasting my money by using these two?

If I were to just use the shakes, would that be an adaquate supply of glutamine and BCAA's?

Like I said I am using 1-3 shakes daily of ProBlend 55.

Anyone?