A key product portfolio is bringing in blockbuster revenue.When you think of the path to millions, you may think of investing in high-growth technology stocks. These players often are known for periods of explosive revenue growth and stock price performance. But if you aim to add some growth to your portfolio, you don't have to invest uniquely in tech stocks.I may surprise you when I say that, in recent years, one pharmaceutical company in particular has become a growth player. Pharma companies usually deli ...