What do you think is the most appropriate (and practical) formula for enteric capsule coating? Any new products?

There are several products mainly based on polymethylmetacrylate especially the Eudragits. But these are not available for the Officina. For this, to my knowledge only 1 product is available namely celluloseacetophate. You can buy a turnkey solution at Certa. I have no experience with that. In the booklet Galenic Formularium There is also a composition in the tools chapter which contains all parts such as a plasticizer. This solution is based on acetone, which evaporates fairly quickly. You lay three layers per side!