The natural materials have been extensively used in the field of drug delivery because they are readily available, cost-effective, eco-friendly, capable of multitude of chemical modifications, potentially degradable and compatible due to their natural origin. Past research therefore studied and acknowledged various natural gums like agar, konjac, guar gum, chitosan, xanthan gum, sodium alginate and locust bean gum for potential pharmaceutical and biomedical applications. These particulars explicate the rationale why proposed article concerns the evaluation of natural gums for sustained drug delivery.

Gum copal (GC) is a natural resinous material of plant Bursera bipinnata (family Burseraceae ). It has been used as a raw material for varnish because it produces glossy films with good weather protection propertie. It has been used as pigment binder in varnishes due to the excellent binding properties. It has been mainly used as an emulsifier and stabilizer for the production of colour, paints, printing inks, aromatic emulsions and meat preservative. Interestingly, GC was also used as medicine for several different ailments such as in the treatment of burns, headache, nosebleed, fever, stomachache, and in the preparation of dental products and as remedy for loose teeth and dysentery.