Sidney Hillman Health Center o v. Abbott Laboratories, Incorpora

EASTERBROOK, Circuit Judge.'

The Food and Drug Administration has approved the use of Depakote (divalproex sodium) to treat seizures, migraine headaches, and some conditiohs associated with bipolar' disordér. Physicians are free to prescribe it to treat other conditions, called off-label uses, but a drug’s manufacturer can promote it only as suitable for uses the FDA has found to be safe and effective. Abbott Laboratories, which makes Depakote, encouraged intermediaries to encourage Depakote’s off-label uses while hiding its own involvement. This promotion, for conditions including…