Hydrogel-Based Drug Delivery System are composed of hydrophilic, naturally derived or synthetic polymers that are cross-linked either physically or chemically. Common polymers used include poly(ethylene glycol) (PEG), hyaluronic acid, chitosan, alginate, and gelatin. Physical cross-links are formed through entanglements or ionic interactions, while chemical cross-links introduce coval... https://prachicmi.livepositively.com/hydrogel-based-drug-delivery-systems-the-future-of-targeted-and-sustained-medicine/new=1