Table 1.

Comparison of existing formulations with the current study.

Study	Formulation Details	Drug load/% Drug release/duration
Hao et al. [6]	Sodium dodecyl sulfate, polyethylene oxide, NaCl, and cellulose acetate	NA/SDS: 74 %, PEO N-80: 85 %, NaCl: 95 %/12 h
Nidhi et al. [7]	PLA (Polylactic Acid), PLGA (Poly (lactic-co-glycolic acid)), PCL (Polycaprolactone), and PEG (Polyethylene Glycol).	100 %/100 % release/24 h
Stalin Kondaveeti et al. [8]	Magnetic-responsive hydrogels of xanthan gum and sodium alginate, cross-linked with calcium chloride.	64 %/66 % release/30 h
Present Study	Magnetic-GO hydrogels prepared with eco-friendly polymers SAlg and LSA, for levodopa delivery.	LD 2: 69 %/24 % release/48 h LD 3: 57.14 %/28 % release/48 h