The most commonly used and
effective classes of medication, triptans and DHE (Dihydroergotamine), however, have a black box warning for two subtypes of migraine because of risk of stroke.
Based on these ratings, each
class of drugs was deemed
effective (Level A), probably
effective (Level B), possibly
effective (Level C), or judged to have inadequate or conflicting evidence to support or refute the
medications» use (Level U).
The
class action suit, filed in Missouri, accuses Pfizer, Bayer, and Johnson & Johnson
of using «unconscionable, unfair, deceptive, unethical and illegal» methods to get consumers to throw away their products when expiration date has passed, though the companies know «that if stored properly these
medications can and do remain chemically stable, safe and
effective long after those dates.»