Polyelectrolyte complex based on carboxymethyl-kappa-carrageenan and Eudragit RL 30D as prospective carriers for sustained drug delivery

- Study of interpolyelectrolyte complexation between modified carrageenan and eudragit.
- Polyelectrolyte complex (PEC) was used to develop bioadhesive matrix tablets.
- Tablets exhibited sufficient bioadhesion and extremely high swelling properties.
- The drug release from matrix systems depends on the PEC concentration.
- Interpolyelectrolyte complex has demonstrated a high potential for drug release.