Synthroid is a drug used to treat hypothyroidism, a condition where the body doesn't make enough thyroid hormone.
Patients are generally on thyroid-drug therapy for life.
Knoll maintains it did nothing wrong but says it settled to avoid a long legal battle. The suit began after Knoll suppressed research that showed Synthroid was no better than two cheaper, generic alternatives, reports this wire story on ABC News . A researcher finally had the study published in the Journal of the American Medical Association in April 1997. Cost isn't the only factor in deciding how to treat hypothyroidism. Click here to find out more.