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. Author manuscript; available in PMC: 2022 Sep 1.
Published in final edited form as: Adv Drug Deliv Rev. 2021 Jul 27;176:113896. doi: 10.1016/j.addr.2021.113896

Figure 8.

Figure 8.

Approximate timelines for FDA drug approval. Based on information in ref. [212]. The average time spent on basic research is 2–5 years followed by 1–2 years of advanced clinical testing and nearly a decade of clinical trials. Average times for each stage of clinical trials are listed in the inset. Finally, the FDA approval process takes roughly 2 additional years. Schematic was made using BioRender.com