Creatine supplementation study
donsj said:
On thing here and it is important. Do not, I repeat, do not use creatine mixed with high carb juices like OJ or grape juice. The creatine will convert to creatinine which can damage kidneys. Mix with water only.
Your warning made me curious, as I have always been told that adding carbs to the creatine was a good way to help get the uptake of the creatine. and I have always done so.
I dug up a few research studies on the subject, of which I have attached one below.
http://physrev.physiology.org/cgi/reprint/80/3/1107.pdf
here is a brief excerpt of section XII:
Not all of the ingested Cr can be retained in the body.
While a high proportion of Cr is usually retained in the
initial days of Cr supplementation, urinary Cr excretion
progressively increases with continued ingestion of Cr
(62, 116, 338, 583, 823, 1040). Urinary excretion of Cr can,
however, be reduced significantly by simultaneous ingestion
of carbohydrates (302, 303).
I think your off on your assumption that carbs will convert creatine into creatinine. Creatinine is a byproduct of creatine metabolism.
It is a long paper, but the sections I thought were relevant were mostly all of section section XII and to a lesser dergree section X part H.