ALBUTEROL SULFATE INHALATION SOLUTION, 0.5%

Albuterol Sulfate Inhalation Solution, 0.5% contains albuterol sulfate, USP, the racemic form of albuterol and a relatively selective beta 2 - adrenergic bronchodilator. Albuterol sulfate has the chemical name α 1 [(tert-Butylamino) methyl]-4-hydroxy-m-xylene-α, α’-diol sulfate (2:1) (salt), and the following chemical structure: The molecular weight of albuterol sulfate is 576.7, and the empirical formula is (C 13 H 21 NO 3 ) 2 • H 2 SO 4 . Albuterol sulfate is a white crystalline powder, soluble in water and slightly soluble in ethanol. The World Health Organization’s recommended name for albuterol base is salbutamol. Albuterol sulfate inhalation solution, 0.5%, is in concentrated form. Dilute 0.5 mL of the solution to 3 mL with sterile normal saline solution prior to administration by nebulization. Each 0.5 mL Unit-Dose Vial Contains: 2.5 mg of albuterol (equivalent to 3 mg of albuterol sulfate, USP) in a sterile, aqueous solution; sulfuric acid is used to adjust the pH to between 3 and 5. Albuterol Sulfate Inhalation solution contains no sulfiting agents or preservatives. It is supplied in 0.5 mL sterile Unit-Dose Vials. Albuterol sulfate inhalation solution is a clear, colorless to light yellow solution. chemical-structure

Albuterol sulfate inhalation solution is indicated for the relief of bronchospasm in patients 12 years of age and older with reversible obstructive airway disease and acute attacks of bronchospasm.

The usual dosage for adults and pediatric patients 12 years of age and older is 2.5 mg of albuterol (one unit-of-use vial) administered 3 to 4 times daily by nebulization. More frequent administration or higher doses are not recommended. To administer 2.5 mg of albuterol, dilute 0.5 mL of the 0.5% solution for inhalation to a total volume of 3 mL with sterile normal saline solution and administer by nebulization. The flow rate is regulated to suit the particular nebulizer so that albuterol sulfate inhalation solution will be delivered over approximately 5 to 15 minutes. Drug compatibility (physical and chemical), efficacy, and safety of albuterol sulfate inhalation solution when mixed with other drugs in a nebulizer have not been established. The use of albuterol sulfate inhalation solution can be continued as medically indicated to control recurring bouts of bronchospasm. During treatment, most patients gain optimum benefit from regular use of the nebulizer solution. If a previously effective dosage regimen fails to provide the usual relief, medical advice should be sought immediately, as this is often a sign of seriously worsening asthma which would require reassessment of therapy. The nebulizer should be cleaned in accordance with the manufacturer’s instructions. Failure to do so could lead to bacterial contamination of the nebulizer and possible infection.

Albuterol sulfate inhalation solution is contraindicated in patients with a history of hypersensitivity to albuterol or any of its components.

The results of clinical trials with albuterol sulfate inhalation solution in 135 patients showed the following side effects which were considered probably or possibly drug related: Percent Incidence of Adverse Reactions Reaction Percent Incidence (N=135) Central Nervous System Tremors 20 Dizziness 7 Nervousness 4 Headache 3 Insomnia 1 Gastrointestinal Nausea 4 Dyspepsia 1 Ear, nose and throat Nasal congestion 1 Pharyngitis <1 Cardiovascular Tachycardia 1 Hypertensions 1 Respiratory Bronchospasm 8 Cough 4 Bronchitis 4 Wheezing 1 No clinically relevant laboratory abnormalities related to albuterol sulfate inhalation solution were determined in these studies. Cases of urticaria, angioedema, rash, bronchospasm, hoarseness, oropharyngeal edema, and arrhythmias (including atrial fibrillation, supraventricular tachycardia, and extrasystoles) have also been reported after the use of inhaled albuterol. To report SUSPECTED ADVERSE REACTIONS, contact Ritedose Pharmaceuticals, LLC at 1-855-806-3300 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .

Other short-acting sympathomimetic aerosol bronchodilators or epinephrine should not be used concomitantly with albuterol sulfate inhalation solution.

Storage and Handling Store between 2°C and 25°C (36°F – 77°F). Protect from light. Store in a pouch until time of use. Rx Only Manufactured for: Ritedose Pharmaceuticals, LLC Columbia, SC 29203 Manufactured by: The Ritedose Corporation Columbia, SC 29203 March 2024