Recombinant human insulin refers to a type of insulin that is produced through genetic engineering using yeast or bacteria. There are various synonyms for this term such as synthetic human insulin, bioengineered insulin, and genetically modified insulin. Biosynthetic insulin, laboratory-produced insulin, and insulin analogs are also commonly used to describe recombinant human insulin. This insulin is used to treat diabetes and has become a preferred choice over traditional animal-derived insulin due to its purity and effectiveness. As diabetic patients require lifelong insulin therapy, the availability of recombinant human insulin has resulted in improved treatment options and enhanced overall patient outcomes.