The increasing shift towards more complex drugs and mechanisms of action (MOSs) has created a huge need for MSLs. Indeed, as medicine grows more complex and molecular, MSLs need to be the trusted source of objective unbiased information. With a greater emphasis on rare diseases, where only a few HCPs may be specialized, MSLs are often a physician’s top resource with a depth of knowledge on these cutting edge therapies. For HCPs, MSLs are critical to helping them stay at the top of their game on the latest in medical education across therapeutic areas.