The U.S. Food and Drug Administration (FDA) is an agency under the Department of Health and Human Services, responsible for overseeing the safety and effectiveness of food and drugs. Its main duties include:

  • Food Safety Management: Supervising the safety and quality of various foods, from general food items to dietary supplements, to protect consumers.

  • Drug and Vaccine Approval: Evaluating the safety and effectiveness of new drugs and vaccines to determine their approval, thereby enhancing public health.

  • Medical Device Regulation: Overseeing the design, manufacturing, and distribution processes of medical devices to ensure patient safety.

  • Cosmetics and Radiation Emitting Products Management: Assessing and regulating the safety of cosmetics and electronic products to protect consumer health.

The FDA applies strict standards and procedures in these various fields to ensure the safety and effectiveness of products, allowing consumers to use them with confidence.


The drug approval process of the U.S. Food and Drug Administration (FDA) involves several stages to ensure the safety and efficacy of new drugs. The main stages and their durations are as follows:

1. Preclinical Studies

  • Purpose: Evaluating the basic safety and efficacy of the drug through animal testing and other methods.

  • Duration: Typically takes between 1 to 10 years.

2. IND Submission

  • Purpose: Submitting an Investigational New Drug (IND) application to the FDA to begin human clinical trials.

  • Review Period: The FDA reviews the submitted IND within 30 days to determine approval.

3. Clinical Trials

  • Phase 1: Evaluating the safety and appropriate dosage of the drug in a small group of healthy volunteers or patients.

  • Phase 2: Assessing the efficacy and side effects of the drug in a larger group of patients.

  • Phase 3: Confirming the drug's efficacy and safety in a large patient group and comparing it with other treatments.

  • Total Duration: Clinical trials generally take about 6 to 11 years.

4. NDA Submission

  • Purpose: Submitting a New Drug Application (NDA) to the FDA based on clinical trial data to obtain marketing approval for the new drug.

  • Preparation Period: Preparing and submitting the NDA typically requires more than 1 year.

5. FDA Review and Approval

  • Review Period: The FDA completes its review and determines approval within 10 months of receiving the NDA. If eligible for expedited review, it can be completed within 6 months.

Total Duration

  • The entire process from drug development to FDA approval generally takes more than 10 to 15 years.

These procedures and durations may vary depending on the characteristics of the drug, the severity of the disease, and whether the FDA's expedited review program is applied.