Speaking as someone who spent years supervising a clinical chemistry laboratory, the original post gets the chemistry wrong in a way that matters. A molecule is defined by its atomic composition and bond structure, not by the precursors used to synthesize it. Creatine monohydrate produced industrially from cyanamide and sarcosine is structurally identical to the creatine in a ribeye. Same molecular formula. Same atomic arrangement. Same spatial configuration. Same physiological behavior once it hits your tissues. Cyanamide and sarcosine are starting materials, not contaminants. The synthesis reaction consumes them and produces creatine as the end product. Pharmaceutical and supplement grade creatine monohydrate (especially Creapure) is then purified to greater than 99.9% creatine, with residual precursors measured in parts per billion, well below any toxicological concern. The scoop in your tub isn’t “cyanamide and sarcosine.” It’s creatine, the same molecule your muscles store and your body uses, in a form confirmed by HPLC and mass spectrometry to meet pharmaceutical purity specifications. On the “just eat steak” suggestion. The chemistry is right that steak contains creatine. The dose isn’t. Raw beef has roughly 5 grams of creatine per kilogram. Cooking reduces it 30 to 50% through thermal degradation. To hit the clinically validated 5 gram daily dose used in every creatine trial showing ergogenic and cognitive benefit, you would need roughly 4 to 6 pounds of cooked steak per day. That isn’t a nutrition recommendation. That’s a cardiovascular experiment. Ribeye three times a week is a solid source of B12, iron, zinc, and amino acids. It is not a dose equivalent strategy for creatine supplementation. Those are different nutritional goals served through different mechanisms. Creatine monohydrate is one of the most well studied supplements in sports science, with more than 500 peer reviewed clinical trials supporting safety and efficacy. Dismissing it on the basis of industrial precursors misreads how organic chemistry actually works. Your original reply nailed the core point. The cooking and dose math just makes it unambiguous. Don’t wait for the diagnosis. Read the label.