A friend was hired in a contract role to launch a new pain medication. The drug was a generic opioid but with a new extended release coating.
The company hired about 300 reps. They had new laptops, iPhones, national launch meeting at Disney World.
They never could get any significant formulary coverage and 10 months later, everyone was laid off.
If the company is a one trick pony, i.e. a single drug, there's significant risk with regulatory approvals. They're farming out production, packaging, so it's a tenuous licensing start-up. Definitely a high risk but high reward proposition if it all comes together.
Look before you leap, especially if you've got a family to support. Hope it all comes together and works out for everyone.