Well, this shows promising results in phase 1.

https://miamiclinicalresearch.com/how-long-do-clinical-trials-last-understanding-the-timeline/

Most likely 5 years if nothing goes wrong.

The timeline is going to be wildly different depending on the side effects, and how long people are expected to have to take the drug.

It's exciting news. Odds are we won't see anything else about it soon, and it's likely they'll need to adjust something to make it work correctly, but this is the nature of research. Especially when it comes to medicine.