Triamcinolone acetonide, USP, the active ingredient in Nasacort® AQ Nasal Spray, is a corticosteroid with a molecular weight of 434.51 and with the chemical designation 9-Fluoro-11β,16 ,17,21-tetrahydroxypregna-1,4-diene-3,20-dione cyclic 16,17-acetal with acetone (C₂₄H₃₁FO₆).

Nasacort AQ Nasal Spray is an unscented, thixotropic, water-based metered-dose pump spray formulation unit containing a microcrystalline suspension of triamcinolone acetonide in an aqueous medium. Microcrystalline cellulose, carboxymethylcellulose sodium, polysorbate 80, dextrose, benzalkonium chloride, and edetate disodium are contained in this aqueous medium; hydrochloric acid or sodium hydroxide may be added to adjust the pH to a target of 5.0 within a range of 4.5 and 6.0.

Each actuation delivers 55 mcg triamcinolone acetonide from the nasal actuator after an initial priming of 5 sprays. It will remain adequately primed for 2 weeks. If the product is not used for more than 2 weeks, then it can be adequately reprimed with one spray. The contents of one 6.5 gram sample bottle provide 30 actuations, and the contents of one 16.5 gram bottle provide 120 actuations. After either 30 actuations or 120 actuations, the amount of triamcinolone acetonide delivered per actuation may not be consistent and the unit should be discarded.

Each 30 actuation sample bottle contains 3.575 mg of triamcinolone acetonide and each 120 actuation bottle contains 9.075 mg of triamcinolone acetonide.

In the Information for Patient tear-off sheet, patients are provided with a check-off form to track usage.

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