Table 1.

Examples of drug delivery systems manufactured with biopolymer-based polyelectrolyte complexes.

Polyanion	Polycation	Formulation	Drug	Reference
Salecan	Chitosan	Hydrogel	Vitamin C	Hu et al. [85]
Carboxymethyl xanthan gum	N-trimethyl chitosan	Hydrogel	Ciprofloxacin	Hanna and Saad [111]
Alginate Guar gum Xanthan gum	Chitosan	Tablet	Isosorbide nitrate	Syed et al. [112]
Xanthan gum	Eudragit® E100	Tablet	Diclofenac sodium	Moin et al. [113]
Kappa, Iota and Lambda carrageenan	Chitosan	Tablet	Trimetazidine hydrochloride	Li et al. [114]
Eudragit® S100	Chitosan lactate Chitosan tartrate Chitosan citrate	Film	Tenofovir	Cazorla-Luna et al. [36]
Pectin	Chitosan	Film	Theophylline anhydrous	Ghaffari et al. [115]
Alginate	Chitosan	Microparticles	Vancomycin	Unagolla et al. [116]
Alginate Eudragit® L100-55	Oligochitosan	Microparticles	Naproxen	Čalija et al. [117]
Pectin	Lactoferrin	Nanoparticles	Curcumin	Yan et al. [118]
Poly(maleic acid-alt-ethylene) Poly(maleic acid-alt-octadecene)	Chitosan	Nanoparticles	Methotrexate	Ciro et al. [119]
Alginate	Cationized gelatin	Nanoparticles	Curcumin	Sarika et al. [120]
Pectin	Chitosan	Nanoparticles	Insulin	Maciel et al. [121]
Alginate Xanthan gum Carbopol®	Chitosan	Freeze-dried inserts	Fluconazole	Darwesh et al. [122]