Medically reviewed by Mary Choy, PharmD Creatine is a nonessential amino acid produced in the body from other amino acids. It is found mostly in muscles, including the heart, and in small amounts ...

Our recent studies show creatine synthesis, excretion, transport and storage are all changed by pregnancy. In a study of 270 women, ...

High muscle mass Because creatinine results from creatine breakdown during muscle synthesis, people with more muscle mass will naturally have higher creatinine levels in their blood, Zuquello says.

Our recent studies show creatine synthesis, excretion, transport and storage are all changed by pregnancy. In a study of 270 women, ...