Look what I just found here:

http://www.mens-fitness-tips.com/www/mens_supplements.htm

Is there any truth in this? I alwyas combine my creatine and glutamine supplements, but this sugests it's not a good idea...

here's what it says:

Supplements
Creatine and Glutamine
Creatine works. Glutamine works. Wouldn't a mixture of the two be great!? Well if you took a look at half the "miracle" supplements out in the market place you would think so. Not hardly. In fact, taking creatine and glutamine at the same time may actually produce far less muscle-building results than if you just took either creatine or glutamine alone. Let me clarify, you should never take creatine and glutamine together in the same supplement or at the exact same time. You can and should take them on the same day just not at the same time.

Most products are just Voo-Doo mixes
Bottom line is, with most companies the depth of their research comes from the magazines they read. The same magazines you read. Can you believe that? It's true. So as they copy the "hot" supplements that the leaders in this industry produce, now and then they will try to "one-up" the real companies.

This is where their lack of nutritional understanding rises to the surface. I have seen this lately with supplements that claim to contain both creatine and glutamine as though this was some magical combination. It seems, the popularity and effectiveness of creatine and glutamine have made some companies think they are much smarter than they are.

Can't occupy the same space at the same time
When you have two micro-nutrients that involve similar metabolic pathways and utilize some of the same substrate transporters and are trying to occupy the same space at the same time, you run into complications that could very well nullify the actions of both. This is what you run into when you take creatine and glutamine at the same time.

And this is exactly opposite of what you don't want to happen. Even though slamming down one drink that has both creatine and glutamine in it is convenient, what's convenience when it's doing you no good? You want results from your supplements and you can get it with just a little planning.

Allow at least one hour and a half between the two
To garner the maximum benefits of both creatine and glutamine you need to take them at different times during the day. Allow at least one hour and a half between the two. This way you'll maximize the effectiveness of both by making sure you're getting full absorption and utilization of each. Taking creatine without glutamine during the day will allow for successful muscle-creatine uptake. Taking glutamine at different times during the day absent of creatine will allow for maximum glutamine transport into muscle tissue without undue carrier competition.

Plan out your supplement schedule
Though it takes a little more strategic planning and is certainly less convenient, spacing out your glutamine and creatine intake will maximize both nutrient uptake and utilization of the two, and will certainly maximize the rate at which these two novel compounds will assist you in promoting muscle growth. It's easy and scientifically valid - unlike the all-in-one hope and pray supplements.

well, like 99% of the b.s. out there, this is someone's opinion without any scientific backup or research. stuff like that makes this all very frustrating.

Considering the lack of research backing up the use of glutamine alone, I would agree that this guy is just making stuff up.

i like the scientific factor behind that..

it was thought that creatine and glutamine used the same receptors.. Na +.. sodium receptors to be transported to muscles, tissue, etc.

so there would be some problems with the uptake of both.. however, recently they have discovered that there are different transport systems, or 'enterances' for both and there should be no real problem.

im sure infact that it would be more 'potent' to take them at once, enhance muscle glycogen capacity and all that good stuff

Considering the lack of research backing up the use of glutamine alone, I would agree that this guy is just making stuff up.

I saw this one article by a doctoral candidate at McMaster University (Canada) claiming that glutamine was useless and that creatine was the cat's ass; I think it was on t-mag.com or someplace like that.

the impression I've gotten over the past coupla months is this: nobody really knows how or if these supplements work so they either make shit up or do shoddy, biased experiments to back up their claims/sponsors' products. maybe that's a wrong impression, but for every article and story claiming X, you can find at least one that completely contradicts it, and probably more than that, so color me cynical about the supplement industry.

Well one of those supplements are working, because I'm getting stronger everyweek and my body is looking damn good now-a-days :D

so color me cynical about the supplement industry.

I'm pretty much the same as you. I try to find real research to back up suppliments I'm interested in using before I spend the money.

djerickd: It may have nothing to do with your suppliments. You can get stronger and bigger by lifting weights, eating properly and sleeping enough. Although, I will say there is plenty of research to back up using creatine.

djerickd: It may have nothing to do with your suppliments. You can get stronger and bigger by lifting weights, eating properly and sleeping enough. Although, I will say there is plenty of research to back up using creatine.

HEHE, I forgot about that!