Of the best selling drugs in 2018, Humira is the only unchanged brand, continuing to defend its first place position in 2019. There were four pharmaceutical companies (Bristol Myers Squibb, AbbVie, Pfizer, and Roche) with more than one best selling drug of 2019. The top drugs of 2019 span five different therapy areas: oncology, autoimmune/immunology, hematology, ophthalmology, and dermatology. Six of the best selling drugs of 2019 are oncologic treatments, making oncology the most targeted field. All best selling brands of 2019 will face biosimilar/generic erosion in the next 10 years.

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