A good reflection piece on the FDA could discuss the importance and impact of its many programs, offices, and regulations. You could also consider addressing the impact of government regulation of industry and safety laws.
In your introduction, you could briefly discuss why there was a need for government regulation and give some examples. Then in the body paragraphs of your reflection, you could address the many changes that the FDA has put into place since its creation, detailing the different regulatory offices. Your conclusion could discuss the long-term impact of the FDA and public support of government regulation in industry.
**The official FDA website has some great information/education material on purpose and history. I included the link below.