I get my l glutamine on iherb.com http://www.iherb.com/Now-Foods-L-Glutamine-Double-Strength-1000-mg-120-Capsules/301
You get discounts the more you buy, coupon evo024 gives you $10 off first order over $40. Or $5 off less than $40.
There is a freebie with each order. Free shipping over $40. Free returns even if opened. My dog shampoo was cracked and they refunded it and i just transferred it to the old bottle.