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A solution is a clear, single-phase preparation with solute molecularly dispersed in a solvent; it can support rapid absorption and uniform dosing, but may have limited chemical stability and require bulky packaging. Syrups are viscous, sweetened preparations, while elixirs are clear hydroalcoholic solutions with different solubility and patient-suitability considerations. Suspensions disperse insoluble solid particles in liquid and are designed to settle slowly, redisperse readily, and provide a uniform dose after shaking. Emulsions combine immiscible liquids using an emulsifier, with types including oil-in-water and water-in-oil; they can improve oral bioavailability of lipophilic drugs but may face physical instability. Across oral liquids, acceptability of taste, odor, and appearance matters, alongside preservation, packaging, labeling, and quality control.