Quetiapine Base is atypical antipsychotic substance used for producing medicines to treat bipolar disorder, depression and schizophrenia. Known for its excellent medicinal attributes and fast action, this substance is recommended for patients who are sensitive to several types of medicines like Olanzapine and Clozapine. Quetiapine Base is classified under dibenzothiazepine derivative. It is accessible in crystalline powder form and it slightly dilutes in water. Standard of this substance has been verified on the basis of its storage life, formulation method, stability of properties, content and purity level. This substance has been produced under the most hygienic condition to preserve its original quality.