Ambien is going Generic Soon

Patients suffering from insomnia may soon sleep better for less thanks to the pending expiration of patents on a number of widely used prescription drugs. This year alone, 10 brand-name medications with revenue exceeding $8.1 billion are expected to lose patent exclusivity, including the widely prescribed sleep medication Ambien (zolpidem tartrate).
Ambien CR is being pushed due to the impending patent expiration of Ambien. Ambien works great for patients who have trouble falling asleep at the beginning of the night, but Ambien CR is better for patients with middle-of-the-night awakenings.