Biodegradable and nontoxic natural biopolymers are commonly being studied as a potential
carrier material for novel drug delivery system due to its bio-compatible nature. Hydrogels are hydrophilic
cross-linked polymer networks. They are able to imbibe large amounts of water or biological fluids. Guar
gum (GG) is a galactomannan. It is obtained from plant Cyamopsis Tetragonolobus Linn. It has wide
applications in pharmaceutical formulations, cosmetic, food, textile, paper, explosive, toiletries industries,
etc. However, due to uncontrollable rate of viscosity, uncontrollable rate of hydration, instability of its
solution for a long time and susceptibility to microbial contamination restricts the use of GG in
pharmaceutical industries. To overcome these drawbacks, GG should be modified to hydrogel. GG based
hydrogels are widely used in pharmaceutical application due to its changes in physic-chemical properties.
GG and its derivatives are used as binders, disintegrate in the formulation of tablets. They are also used as
control-released agents in novel drug delivery. The present review has been aimed to give an overview of
GG based hydrogels for pharmaceutical applications.