title: Gamma-Hydroxybutyrate (orphan medical).
abstract: Orphan Medical is developing gamma-hydroxybutyrate (Xyrem) for the potential treatment of narcolepsy [183352]. In October 2000, an NDA was filed with the FDA [384422], [405504] and Xyrem received an FDA approvable letter in July 2001. Orphan Medical stated that it believed it could meet the requirements in the letter, including a trial in respiratory-compromised patients, by the end of 2001 [414461]. The FDA also requested follow-up safety data from patients in previous Xyrem trials. At that time, the drug was not expected to be launched until mid-2002 [415301], [416305]. In October 1999, the US House of Representatives passed the HR 2130 bill, allowing the medical use of gamma-hydroxybutyrate, which is classified as a Schedule I controlled substance in the US [343562]; the Senate approved this legislation in November 1999 [348206]. In February 2000, a congressional bill supporting the continued development of medically formulated gamma-hydroxybutyrate was passed, making medically formulated gamma-hydroxybutyrate products Schedule III substances [354108], [356597]. GHB occurs naturally in many human tissues. It has previously been used in the treatment of narcolepsy and is not patentable for that indication.
authors.affiliation: Indiana University School of Medicine, Evansville 47712, USA. gtunnic@iupui.edu
authors.forename: Godfrey
authors.initials: G
authors.lastname: Tunnicliff
authors.forename: Beat U
authors.initials: BU
authors.lastname: Raess
mesh_terms: D000818:Animals; D017321:Clinical Trials, Phase I as Topic; D017322:Clinical Trials, Phase II as Topic; D017326:Clinical Trials, Phase III as Topic; D015507:Drugs, Investigational / Q000493:pharmacokinetics / Q000494:pharmacology / Q000627:therapeutic use*; D018755:GABA Agonists / Q000493:pharmacokinetics / Q000494:pharmacology / Q000627:therapeutic use*; D058786:GABA-B Receptor Agonists; D006801:Humans; D009290:Narcolepsy / Q000188:drug therapy*; D012978:Sodium Oxybate / Q000493:pharmacokinetics / Q000494:pharmacology / Q000627:therapeutic use*; D013329:Structure-Activity Relationship; D016896:Treatment Outcome
chemical_list: D015507:Drugs, Investigational; D018755:GABA Agonists; D058786:GABA-B Receptor Agonists; D012978:Sodium Oxybate