That´s true but the intestine is the spine of the immune system,the chineswe are telling,and if the gut needs it for its energy so be it.
It´s anyway only the 5g-on-empty-stomach dose,that will give your hgh-pulse a decent spike-boost,so after your train a good thing to do.
If you´d like to supplement your muscle-glutamine-pool,then supplement BCAAS cause they´re absorbed best and utilised for the body´s own glutamine synthesis.