on-label (use) означает, что врач прописал пациенту приём лекарства в соответствии с его предназначением.

Есть еще OFF-LABEL USE, то есть прием не по назначению.
http://www.ama-assn.org/resources/doc/cme/fact-sheet-4.pdf

Once the product is approved, the manufacturer and the FDA agree on specific language describing indications, patient populations, dosage, route, conditions of usage, and other information to be included in the product’s labeling (i.e., package insert, and where appropriate, manual). Using the product in compliance with the FDA required information is referred to as on-label use.
Off-label use of a prescription drug or device refers to the ability of licensed health care providers to prescribe or use the drug for indications, conditions, patients, dosages or routes of administration not yet evaluated and approved by the FDA. The decision to prescribe a prescription drug or use a device off-label should be based upon emerging science and clinical evidence and may or may not differ from the evidence used for the FDA to approve the product being on the market.

educational program - возможно, курс для врачей о правильном применении препарата, который оказался недостаточно полным.