Compositions and methods for treating bacterial, fungal, and yeast infections in wounds are disclosed. The disclosed poloxamer-based pharmaceutical composition includes a micronized poloxamer composition base combined with one or more suitable active pharmaceutical ingredients (APIs), such as, antibacterial or antifungal, thereby resulting in a synergistic effect for the APIs. The micronized poloxamer composition within poloxamer-based pharmaceutical composition includes poloxamer 407 and poloxamer 188. Poloxamer-based pharmaceutical composition exhibits a particle size average of about 50 μm, which enhance APIs solubility. Additionally, poloxamer-based pharmaceutical composition can be delivered in a plurality of dosage forms, such as, powders, sprays, ointments, pastes, creams, lotions, solutions, and patches, among others.