Still shows up in many products, Xtend one of the top sellers:
Vitamin B6 (as Pyroxidine HCI) 10mg 167%
L-Leucine 3.5g **
L-Glutamine 2.5g **
L-Isoleucine 1.75g **
L-Valine 1.75g **
Citruline Malate 1g **
Glutamine is an unsung hero in my book. Absorption can be an issue depending on timing and meal consumption, nevertheless, a supplement I have always used without question.
Some insist it is useless, gets destroyed by stomach acid, competes for absorption with other aminos etc...
Others, such as myself, always keep it around whether in a product such as Xtend or as a stand alone. Great for recovery and indirectly stimulating or supporting the immune system.
Really comes down to personal preference for most.