Patents on Nanoparticulate Drug Delivery Systems: A Review

A quercetin-encapsulated and polydopamine-integrated nanosystem (PDA@QLipo) shows promise for treating androgenetic alopecia by reshaping the perifollicular microenvironment, outperforming minoxidil in hair regeneration. The nanosystem promotes cell proliferation, hair follicle renewal, and recovery by scavenging reactive oxygen species and enhancing neovascularity.

A peptide-based delivery system for finasteride shows promise in reducing systemic side effects while maintaining hair growth effectiveness. Combining this with other treatments like minoxidil and RU58841 could enhance results with lower systemic absorption.

Minoxidil can be effectively delivered through nanoemulsions containing eucalyptol or oleic acid, enhancing its diffusivity and targeting hair follicles. This contradicts the advice against mixing minoxidil with oils in topical formulations.

Topical finasteride in a liposomal formulation reduces systemic absorption compared to ethanol solutions. The user is seeking sources for such products, noting that popular options like morr-f are not liposomal.

The conversation discusses hair regrowth using dissolvable microneedles loaded with rapamycin and epigallocatechin gallate nanoparticles. Specific treatments mentioned include Minoxidil, finasteride, and RU58841.

The conversation discusses the delay in the PP405 Phase 2 study results, now expected by the end of 2025, and skepticism about research practices. There is also mention of optimism for Amplifica's AMP303 and a topical treatment in early testing.