Shannon Stapleton/Reuters Jet lag sufferers take note: a drug designed to treat the condition has been delayed by the US Food and Drug Administration. Vanda Pharmaceuticals, which is developing the medicine, said it received the response on Friday, but plans to continue working to get the drug approved. At $1,500 for a three-day dose, however, you might be better off sticking to regular sleep meds on your next intercontinental trip.