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Propranolol HCL-loaded liposomes for intranasal delivery: in vitro and ex vivo evaluation of optimized formulation using design of experiments.
Therapeutic Delivery 2023 November 29
Aim: To develop a propranolol HCL-loaded liposomal nasal formulation for migraine prophylaxis. Materials & methods: Formulated the liposomes through thin layer hydration method and optimized via design of experiments (DOE). The prepared liposomes were characterized for particle size, zeta potential, PDI, drug entrapment and drug loading. Assessed for in vitro release kinetics, ex vivo permeability, histopathology and stability. Results: Optimized liposomes: 135.52 ± 5.87 nm, -19.9 ± 0.075 mV, 95.41 ± 0.05% entrapment, 43.37 ± 0.02% loading. Showed immediate (30.07 ± 2.09%) and sustained release (95.69 ± 4.58%) over 10 h. Enhanced permeation compared with controls; well-tolerated histopathologically. Conclusion: Liposomal formulation offers promise for intranasal propranolol HCL delivery in migraine prophylaxis, with stability under refrigeration.
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