The ‘best field’ depends on what the person wants to achieve in his or her career. For some, it is the monetary aspect while for others it is how much they are contributing to society. If an individual is looking for a high rate of career advancement, then pursuing an MBA after pursuing B. Pharm is the best option. Those who have done their MBA have one of the top salaries in India. They can work in top companies as marketing or sales managers. The other option is to do a PhD and become a researcher or a scientist and bring and new and better products that benefit humanity.