The present disclosure provides methods related to inhibiting or treating pancreatitis in a subject in need thereof, which include the use of a proprotein convertase subtilisin kexin 9 (PCSK9) inhibitor. The disclosed PCSK9 inhibitors and compositions including them can be used for treatment, inhibition, or prevention of pancreatitis in a subject. Treatment methods can include administering to the subject a therapeutically effective amount of a PCSK9 inhibitor.