How do Klarna flexible payments work? Follow Eligible patients can use Klarna to split the cost of their purchase into 4 interest-free, biweekly payments. Click here or visit Klarna's website to find out more. Related articles Are ADD and ADHD the same? What if I get nervous talking to healthcare providers? How does Zoom work? How do I check the status of my request ticket? Articles in this section How do Klarna flexible payments work?