What are the top 20 pharmaceutical companies in Puerto Rico?

As of my last knowledge update, Puerto Rico is home to numerous pharmaceutical companies, many of which are subsidiaries of larger global firms. Some of the top pharmaceutical companies operating in Puerto Rico include Pfizer, Johnson & Johnson, Merck, AbbVie, and Bristol-Myers Squibb. Additionally, companies like Amgen, Eli Lilly, and Novartis have significant operations on the island. For a complete list of the top 20, it's best to consult recent industry reports or local economic publications, as rankings and company presence can change frequently.