国内医药代表有给医生各种形式的回扣，美国是否也有，这里有一篇文章

Doctors Prescribe More of a Drug If They Receive Money from a Pharma Company Tied to It

Pharmaceutical companies have paid doctors billions of dollars for consulting, promotional talks, meals and more. A new ProPublica analysis finds doctors who received payments linked to specific drugs prescribed more of those drugs.

https://www.propublica.org/article/doctors-prescribe-more-of-a-drug-if-they-receive-money-from-a-pharma-company-tied-to-it