Vriligy 60 mg (which contains dapoxetine) is a pharmaceutical product, and like all medications, it undergoes rigorous testing and quality control processes to ensure its purity, safety, and efficacy. These tests are typically carried out at various stages of the manufacturing and regulatory approval process: 1. Manufacturer Testing: Pharmaceutical companies that produce Vriligy are responsible for testing the product for purity and quality during the manufacturing process. This includes: Raw materials testing: Ensuring that the ingredients (including dapoxetine) meet specified purity standards before being used in production. In-process testing: Verifying that the formulation meets required standards throughout production. Finished product testing: Checking the final tablets for consistency in strength, appearance, and purity. 2. Regulatory Bodies: Government agencies like the FDA (U.S. Food and Drug Administration), EMA (European Medicines Agency), or other national drug regulatory bodies (such as India's CDSCO, or the UK's MHRA) oversee and regulate the approval of drugs like Vriligy. They review the testing data submitted by the manufacturer to ensure that the product meets purity and safety standards before it can be sold. These agencies typically require manufacturers to submit a range of clinical and quality control data, including purity tests, which are often performed using techniques like HPLC (High Performance Liquid Chromatography) or mass spectrometry.