magic bullet(n = noun.artifact) - a remedy (drug or therapy or preventive) that cures or prevents a disease; "there is no magic bullet against cancer"
is a kind of curative, cure, remedy, therapeutic

   A drug or therapy or preventive that cures or prevents a disease, with only minimal side effects; as, there is no magic bullet against cancer. [WordNet 1.5]

as if by magic, bite the bullet, black magic, bullet, bullet fingerprinting, bullet hole, bullet train, bullet vote, dumdum bullet, magic, magic eye, magic lantern, magic marker, magic mushroom, magic number, magic realism, magic spell, magic square, magic trick, rubber bullet, silver bullet, tracer bullet, white magic