Drugs can affect the skeleton in different ways. Antiepileptic drugs were not associated with any major fracture risk. Lithium was associated with a decreased fracture risk. Insulin, sulphonylureas and metformin were associated with a decreased risk, whereas glitazones were associated with an increased risk. Blood pressure lowering drugs, thiazide diuretics and nitroglycerin were associated with a decreased risk of fractures, whereas amiodarone and loop diuretics were associated with an increased risk. Pain medication varied from no effect to an increased fracture risk.