SPL Set ID: 77b20c6b-f30f-42a9-a0ef-d5d0bd3feb56
1 drug(s) with this SPL Set ID
Azelastine HCl Nasal Spray, 137 micrograms (mcg), is an antihistamine formulated as a metered-spray solution for intranasal administration. Azelastine hydrochloride occurs as a white, almost odorless, crystalline powder with a bitter taste. It has a molecular weight of 418.37. It is sparingly soluble in water, methanol, and propylene glycol and slightly soluble in ethanol, octanol, and glycerine. It has a melting point of about 225°C and the pH of a saturated solution is between 5.0 and 5.4. Its chemical name is (±)-1-(2H)-phthalazinone,4-[(4chlorophenyl) methyl]-2-(hexahydro-1-methyl-1H-azepin-4-yl)-, monohydrochloride. Its molecular formula is C 22 H 24 ClN 3 O•HCl with the following chemical structure: Azelastine HCl Nasal Spray contains 0.1% azelastine hydrochloride, USP in an aqueous solution at pH 6.8 ± 0.3. It also contains benzalkonium chloride (125 mcg/mL), edetate disodium, hypromellose, citric acid, dibasic sodium phosphate, sodium chloride, and purified water. After priming [ see Dosage and Administration (2.3) ], each metered spray delivers a 0.137 mL mean volume containing 137 mcg of azelastine hydrochloride, USP (equivalent to 125 mcg of azelastine base). The bottle can deliver 200 metered sprays. Aze-struc