Cilazapril is an antihypertensive drug used to treat high blood pressure and heart failure. However, during its production or storage, impurities can be formed, which may affect the safety and efficacy of the drug. Cilazapril impurities include related substances, degradation products, and residual solvents, and their identification and quantification are essential for ensuring the quality of the drug product. Regulatory authorities have set limits for these impurities to ensure that the drug is safe for human consumption.
