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Abstract: Analgesia, one of the components of triad of anaesthesia, has now extended to relief of postoperative pain, chronic pain and cancer pain. The spinal cord has taken the center stage in analgesia practice and Spinal anaesthesia is the commo The production and sale of counterfeit and substandard pharmaceutical products, such as essential medicines, is an important global public health problem. Our method is based on applying Nuclear Quadrupole Resonance (NQR) spectroscopy to authenticate the contents of medicine packets. NQR is a non-invasive, non-destructive, and quantitative radio frequency (RF) spectroscopic technique. It is sensitive to subtle features of the solid-state chemical environment and thus generates unique chemical fingerprints that are intrinsically difficult to replicate. By measuring such spectra, we can readily identify many kinds of drugs prepared in slightly different ways-say tablets containing different inactive ingredients or produced using machines that apply different compacting pressures.