How can Pfizer manage the threat posed to Viagra by new entrants to market?

Pfizer can manage the threat posed to Viagra by new market entrants through several strategies. Firstly, they can invest in marketing and brand loyalty initiatives to reinforce Viagra's established reputation among healthcare providers and patients. Additionally, Pfizer could explore the development of new formulations or products that enhance or complement Viagra, thus maintaining a competitive edge. Lastly, leveraging patent protections and strategic partnerships can help Pfizer sustain its market position while adapting to evolving consumer preferences and emerging competition.