Ambien generated $4 billion in profit in less than 20 months.
"It took Ambien less than 20 months to amass 4 billion in profit." (said at 3:50:40)
No published record matching the claim that Ambien generated $4 billion in profit in less than 20 months was located; this does not prove the claim false.
contradicted by web sources
Financial reports and market data show that Ambien did not achieve multi-billion-dollar figures until more than a decade after its 1993 launch, reaching peak annual sales of roughly $2 billion in the mid-2000s. Because peak global revenue was around $2 billion per year, the drug never generated $4 billion in profit over a 20-month period.