Recently, spontaneous case testimonials were received by Biohit Oyj from migraine patients (and one with cluster headache) reporting that our new medical device, Acetium™ capsule (containing 100mg l-cysteine, developed for inactivation of acetaldehyde in the stomach contents after alcohol intake), proved to be highly effective against their headache attacks. Their attacks disappeared almost immediately after onset of L-cysteine administration, all of them remaining in complete remission for several months up to several years.