Biological drugs are produced by living microorganisms, plants, or animal cells, and used in the prevention, diagnosis, or treatment of rheumatic arthritis, cancer and other diseases. Biological drugs are usually large biomolecules, such as monoclonal antibodies (mAbs) and interleukins. The replication of these protein molecules is a delicate task due to their structural complexity, and the potential safety risks. Several methods are available to characterize highly ordered structure of these drugs, i.e., NMR spectroscopy, X-ray crystallography, electron microscopy, mass spectrometry and functional assays. Creative Biostructure dedicated to aiding in biological drug design and discovery by its extraordinary biologists team specialized in protein structure. NMR is particularly useful in analysis of pharmaceuticals, screening weak-binding compounds for drug design.