I use 40g Glutamine/day Less I find wont do much.
10g morning, 10g pre workout, 10g post workout, 10g before bedtime
And creatine you could do like this, 5g morning, 5g pre workout, 5g post workout, 5g before bed
Creatine should be taken with carbs, youd maybe like to try some ALA with the creatine to get better results..