The trajectory of Sildenafil presents a challenging picture for those considering investment. While the initial introduction generated substantial profits, the expiration of its patent opened the floodgates to off-brand versions, dramatically reducing revenue. This presents a specific dilemma for drug manufacturers banking on comparable blockbuster

The legacy of Viagra, and its creator copyright, presents a complex case study for investors. At first a blockbuster drug, producing billions in income, its patent expiration created a flood of knock-off medications, significantly impacting its position . While some firms may try to capitalize on male sexual dysfunction, the present landscape deman