Pharmaceutical standards and regulations ensure the safety, efficacy, and quality of drugs and medical products worldwide. Regulatory authorities like the US FDA (USA), EMA (Europe), MHRA (UK), PMDA (Japan), and CDSCO (India) establish strict guidelines for drug development, approval, and manufacturing. These agencies enforce GxP compliance, clinical trial regulations, and pharmacovigilance to protect public health. Each body has region-specific requirements, but all aim to maintain global harmonization through ICH and WHO standards. Adhering to these regulations is critical for market authorization and ongoing compliance.