Dexpak Taperpak is a brand name medication that contains the steroid dexamethasone. Synonyms for this medication include dexamethasone taper, steroid taper, and corticosteroid taper. A taper is a gradual downward change in dosage, which is commonly used when decreasing a medication regimen. Other synonyms for dexamethasone, the active ingredient in Dexpak Taperpak, include Decadron, DexPak, and Maxidex. Dexamethasone is a powerful anti-inflammatory medication that is used to treat a variety of conditions, including allergies, skin conditions, and respiratory disorders. It is important to understand the potential side effects of any medication and to use it only as directed by a healthcare professional.