Cortef is the brand name for hydrocortisone, which is a steroid medication used to treat various conditions such as allergic reactions, inflammation, and adrenal gland disorders. Aside from cortef, there are other synonyms for hydrocortisone that are used interchangeably, including Solu-Cortef, Hydrocortone, and A-Hydrocort. These brands are formulated to contain the same active ingredient as cortef, and can be used to achieve the same therapeutic effect. It's important to note that although these drugs may have different names, they may have varying strengths or formulations. Therefore, it is crucial to consult a healthcare professional for the appropriate medication and dosage for the condition being treated.