Creatine can also improve strength, power and high-intensity exercise performance. A research review found that adding it to a training program increased strength by 8%, weight lifting performance by 14% and bench press one-rep max by up to 43%, compared to training alone .
https://www.healthline.com/nutrition/what-is-creatine
An increase in serum creatinine can be due to increased ingestion of cooked meat (which contains creatinine converted from creatine by the heat from cooking) or excessive intake of protein and creatine supplements, taken to enhance athletic performance.
https://en.wikipedia.org/wiki/Creatinine
Creatinine secretion by the tubules can be blocked by some medications, again increasing measured creatinine. Serum creatinine. Measuring serum creatinine is a simple test, and it is the most commonly used indicator of renal function. A rise in blood creatinine level is a late marker, observed only with marked damage to functioning nephrons. Therefore, this test is unsuitable for detecting early-stage kidney disease.
https://en.wikipedia.org/wiki/Creatinine
There is some concern that it could harm the kidney, liver, or heart function. However, a connection between high doses and these negative effects has not been proven. Creatine can also cause stomach pain, nausea, diarrhea, and muscle cramping. Creatine causes muscles to draw water from the rest of your body.
https://www.webmd.com/vitamins-supplements/ingredientmono-873-creatine.aspx?activeingredientid=873&activeingredientname=creatine
Creatinine is a breakdown product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body.
https://en.wikipedia.org/wiki/Creatinine
Creatine is a substance that is found naturally in muscle cells. It helps your muscles produce energy during heavy lifting or high-intensity exercise. Taking creatine as a supplement is very popular among athletes and bodybuilders in order to gain muscle, enhance strength and improve exercise performance .
https://www.healthline.com/nutrition/what-is-creatine
Creatine also helps you gain muscle in other ways, including: Boost work load: It can enable more total work or volume in a single training session, which is a key factor in long-term muscle growth . Improve cell signaling: Supplementation can increase satellite cell signaling, where signals to the muscles help with repair and new muscle growth .
https://www.healthline.com/nutrition/what-is-creatine
Creatinine - Biological relevance. 1  Serum creatinine (a blood measurement) is an important indicator of renal health because it is an easily measured byproduct of muscle metabolism that is excreted unchanged by the kidneys.
https://en.wikipedia.org/wiki/Creatinine
Serum creatinine is the most commonly used indicator (but not direct measure) of renal function. Elevated creatinine is not always representative of a true reduction in GFR.
https://en.wikipedia.org/wiki/Creatinine
Creatine also alters several cellular processes that lead to increased muscle mass, strength and recovery (1, 2). Bottom Line: Creatine is a substance found naturally in your body, particularly muscle cells. It is commonly taken as a supplement.
https://www.healthline.com/nutrition/what-is-creatine
what is a creatine
Creatinine is a breakdown product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body.