So far, all I can address is the packaging, cost, and taste. Packaging is marked with an expiration date, which is helpful; powder settled so that the bottle appears half-full, but that seems reasonable; the taste is non-existent to me. It may have a slight, almost undetectable bitterness, but I think I could just eat it from a spoon and wash it down with water. The price is better than most, and this is purported to be pure product with no fillers. Who wants fillers? I have celiac (gluten sensitivity), so I am trying this for after Ive accidentally eaten gluten, which happens every couple of months. When it does, I have digestion issues, joint pain, irritability and muscle weakness. It takes a week or so to recover, so Im hoping this will shorten that time. I will update when I have results.

I love this glutamine powder. Nutrabio sells pharmaceutical grade products without fillers. I take this for a variety of reasons, but it is great in preventing muscle pain after a work out. I take one scoop daily when I remember to help prevent leaky gut and it is supposed to help with energy (although I have not found any benefit there in the energy department). But the best use for me is preventing muscle pain when working out or doing heavy yard work. For best results, take a scoop before your workout, another scoop afterwards and again before bed and it does a very good job at preventing muscle pain. My friend used it before and after running a marathon and was amazed at the difference. She said normally after a marathon she is spent, but with the l glutamine (she uses a different brand) she was able to go home and mow her lawn and give her dogs a bath. The benefit of ordering from the amazon marketplace, is you can usually get free shipping.

Easy to dissolve and fast acting. I enjoy most NutraBio products and this is one of their best.

I know friends who have used this with great success. I’m one of the rare few who had a terrible reaction. Now I have half or more of this product going to waste. I tried to push through by tapering up and down, but the headaches and extreme fatigue was too much. I’ve heard reactions are rare but after this I noticed the same reaction to bone broth which both realizations all around are a bummer because I really wanted this to help repair my gut. Which, in fairness it did help a little but the headaches were just too much.

I take it during and after a though lift

Ordered this product for my daughter. Her nutritionist recommended it to help her get through chemo. Seems to be just what she needed.

I can taste something when I add this to water, which was what I read you should do. To offset, I add flavor to the water to cover up the taste of the L Glutamine. Time will tell if this actually helps heal my gut.

Finding a product with no additives, no fillers, no bull, was a huge pain in the butt. Once you realize this is an option, you may wonder why you have been consuming products with fillers that do nothing, or possibly do harm over time. Additionally, finding a product that verifies and advertises its testing, and is processed in the United States (home-grown jobs), can be difficult. Some companies that advertise as USA actually buy product from overseas and simply package it here. More particularly, this product has no issue mixing, almost no taste when mixed with water, and no consistency issues throughout the containers use (several months). I am not a scientist, therefore will not comment on glutamines ability to help recovery/growth. I feel this product works well for me, though I use a slightly lesser amount than recommended doses. It blends well with fruit, veggies, milk, yogurt, water. I will buy from this company again, and again, as I want to know what Im consuming. Healthy in, healthy out. Good luck hunting! Im happy with this product and have no qualms recommending it.

It helps my stomach and intestines and I sleep better