Not sure what non-pill methods for quercetin are available.
Sunshine has a blog here in PR about Transdermal applications...maybe she has some advice......
@sunshine44
Particle size
I don' yet know how to convert Daltons to nanometers...
how to get nanno-quercetin.
Quercetin being used for anti-tumor and anti-cancer...hence a keen interest in delivery systems and particle sizes.
https://pubmed.ncbi.nlm.nih.gov/28259895/
Int J Oncol
. 2017 Apr;50(4):1299-1311.
doi: 10.3892/ijo.2017.3886. Epub 2017 Feb 20.
Quercetin nanoparticles display antitumor activity via proliferation inhibition and apoptosis induction in liver cancer cells