Long acting injectable formulations: the state of the arts and challenges of poly(lactic-co-glycolic acid) microsphere, hydrogel, organogel and liquid crystal
2019
Background
Long-acting injectable formulations (LAIFs) have received substantial attention recently due to their advantages over conventional formulations, including easy administration, continuous and controlled release of drug over months, and the ability to maintain drug concentrations within the therapeutic range. The constant advances in biotechnology produce complex active pharmaceuticals that might be difficult to administer by conventional means. In particular, peptides, proteins, and antibodies are hard to administer orally given their physicochemical instability in the gastrointestinal tract and short half lives in blood. Therefore, LAIFs are a good candidate delivery system for such drugs. LAIFs reduce the frequency of application and improve patient compliance. For instance, LAIF-based antipsychotics can be more effective in patients with bipolar disorder and schizoaffective disorder.
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