How do state authorities deal with illegal direct-to-consumer advertisement?

Basal insulin analog detemir (LEVEMIR)

Untrustworthy advertisement for chickenpox vaccine

CARD-study: atorvastatin (SORTIS) in diabetes?
High-dose simvastatin (e.g. ZOCOR) in acute coronary syndrome?

Perioperative management of oral anticoagulation

Methyl-aminolevulinate (METVIX) in basal cell carcinoma
E.g. ct-generics: bribing prescribers

Confirmed: compression stockings protect against post-thrombotic syndrome
Oseltamivir (TAMIFLU) - resistant mutants arise frequently
SSRI in pregnancy: withdrawal symptoms in the neonate

Seizures with venlafaxine (TREVILOR)

Fatal liver failure associated with pioglitazone (ACTOS)
Nosebleed with antipsychotic risperidone (RISPERDAL)