The redesigned follitropin α pen injector for infertility treatment.

Abstract

Treatment for infertility may require multiple drugs and complex dosing schedules. Available injection devices for patients who require regular injections during treatment are reviewed in this article, focusing on pen injectors used to self-administer recombinant human follicle-stimulating hormone (follitropin α). Following the introduction of the first and second follitropin α pen injectors in the last decade, a third pen injector with improved design for the administration of follitropin α has been developed for use in fertility treatment cycles.