Magnetic drug delivery is a novel approach to delivery drug using engineered ’smart’ micro carriers which appears to overcome a number of limitations facing current methods of delivering medicines. The drug and a suitable ferrofluid are formulated into a pharmaceutically stable formulation which is usually injected through the artery that supplies the target organ or tumor in the presence of an external magnetic field. Depending on the fabrication method, particle size and nature they are named as magnetic microspheres, magnetic nanoparticles, magnetic liposomes etc. This review gives the information regarding the all possible formulations that can be designed using magnetism as the drug delivery mode.
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