Quality can be defined in several ways including conformance to specifications, fitness for use, and value for price paid. It is judged based on factors like performance, reliability, and support services provided. Pharmaceutical products have higher quality standards and more regulations compared to consumer goods due to their intended use and potential risks. Ensuring compliance with various quality guidelines is important for patient safety and involves establishing quality systems, policies, procedures, documentation, and ongoing assessments like audits and corrective actions. Non-compliance can result in issues like complaints, recalls, and regulatory actions.