Monophasic liquid dosage forms are homogeneous pharmaceutical preparations in which the drug is completely dissolved in a single phase. Gargles, mouthwashes, and throat paints are commonly used monophasic liquids for treating infections and maintaining hygiene of the oral cavity and throat. These formulations provide local therapeutic action, antimicrobial effect, and soothing relief to the mucous membranes. Proper preparation, formulation, and labeling are essential to ensure safety, stability, and effective therapeutic action.
