Don't.
The industry is a joke. Go sell something else. ANYTHING else. There are plenty of industries that will pay a base salary plus bonus and benefits. Pharma is the most wasteful industry on planet earth. You will experience layers upon layers of useless managers with completely unjustifiable expensive national meetings (which will take you away from family and kill your sales moment) simply so that these middle managers and thousands of home office marketing personnel can justify their existence.
Instead, go find a niche product in an evolving industry. You will make coin, and no one outside of your company will understand what the hell you actually do or sell... which is exactly how you want it!... and 20 years from now you will thank yourself for not wallowing into this quagmire known as the Pharma industry.
Cheers.