elizabethfaiella-ga,
Hello again.
As noted in some of the earlier comments, there is a limited
literature on zolpidem and its direct influence on suicidal ideation.
However, there is considerable literature -- particularly case reports
-- of zolpidem's infrequent but well-documented psychotropic side
effects, which include hallucinations, psychosis, and depression.
These certainly seem an indication of a medicine powerful enough to
induce an altered state of thinking in some patients, and one that
could possibly contribute to suicidal thoughts.
I have listed the relevant literature below. I've presented first the
papers that, to my mind, seem to have the most relevance to your
question. These are followed by a longer list of papers of secondary
importance, but still worth a look.
I trust this information is just what you needed. But before rating
this answer, please let me know if there's anything else I can do for
you. Just post a Request for Clarification, and I'm at your service.
Best of luck to you and your clients.
pafalafa-ga
===============
[this strikes me as the most quantitative overview available]
http://www.tga.gov.au/docs/html/aadrbltn/aadr0202.htm#zolpi
Seeing things with zolpidem
...Zolpidem (Stilnox) was marketed in Australia in late 2000 for the
short term treatment of insomnia. It is structurally unrelated to the
benzodiazepines, but has a similar pharmacological action. In 2001,
ADRAC received 72 reports describing 170 reactions in association with
zolpidem as shown in Table 1.
...Of these 72 reports, 56 described one or more neurological or
psychiatric reactions, especially visual hallucinations, confusion,
depression and amnesia. Most reactions occurred with a daily dose of
10 mg and 70% occurred after the first dose. Most of the 15 reports of
hallucinations occurred within a few hours, often soon after the drug
was taken. Half of the reports of amnesia described a total loss of
memory for events immediately after the drug was taken, although two
described poor memory in subsequent days. The onset of confusion and
depression was sometimes apparent within hours of taking the drug but
in most cases occurred the following day.
...Prescribers should be alert to the fact that zolpidem may be
associated with distressing neurological or psychiatric reactions.
[NOTE that Table 1 shows that hallucinations were the most common
adverse reaction, but depression was fairly common as well]
Adverse Reaction Number of Occurrences
Visual hallucinations 15
Depression 7
===============
[the Veterans Administration has published a cautionary study on the
use of zolpidem...contact information for the study author is
included]
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15555480&dopt=Abstract
Zolpidem prescribing and adverse drug reactions in hospitalized
general medicine patients at a Veterans Affairs hospital.
Mahoney JE, Webb MJ, Gray SL.
Section of Geriatrics, Department of Medicine, University of Wisconsin
School of Medicine, Madison, Wisconsin
jemahone@facstaff.wisc.edu
...Zolpidem is prescribed for sleep disruption in hospitalized
patients, but data on the incidence of adverse drug reactions (ADRs)
are based largely on outpatient studies.
...CONCLUSIONS: In this case series in medical inpatients, there was a
high frequency of ADRs, particularly CNS ADRs, associated with
zolpidem use. Zolpidem should be used cautiously in the hospital
setting.
===============
[this article explicitly mentions ideation]
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15107718&dopt=Abstract
Encephale. 2004 Mar-Apr;30(2):153-5
Dependence on zolpidem: a report of two cases
Boulanger-Rostowsky L, Fayet H, Benmoussa N, Ferrandi J.
EPSDM, Service du Docteur Talgorn, Secteur 51G02, 56, avenue du
General Sarrail, 51022 Chalons-en-Champagne cedex, France
...one patient presents an epileptic seizure whereas the other display
a severe psychiatric complication such a psychosis. In the literature,
withdrawal was accompanied by confusion, suicidal ideas, nausea,
vomiting, sweat, tremors, tachycardia and insomnia rebound.
===============
[zolpidem is finding increasing use in suicide attempts...though not
conclusive as to ideation, there is at least a suggestion of a
relationship, particularly when considered in the context of other
studies]
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15177630&query_hl=6&itool=pubmed_docsum
Forensic Sci Int. 2004 Jun 30;143(1):53-9.
Fatal intoxications in a Swedish forensic autopsy material during 1992-2002
Jonsson A, Holmgren P, Ahlner J.
Department of Clinical Pharmacology, University Hospital, S-581 85
Linkoping, Sweden. anna.k.jonsson@lio.se
...The aim of the present study was to describe the current pattern of
substances detected in fatal intoxications in Sweden.
...The drugs with high proportions of cases with toxic concentrations
detected were propoxyphene, amitriptyline, zolpidem, carisoprodol,
alprazolam, thioridazine, methadone and ketobemidone.
...All suicides, uncertain cases and accidents where the cause of
death were fatal intoxications
===============
[ psychotropic reactions may be dose-dependent ]
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11793620&dopt=Abstract
Ann Pharmacother. 2001 Dec;35(12):1562-4
Brodeur MR, Stirling AL.
College of Pharmacy and Allied Health Professions, St. John's
University, New York, NY
Delirium associated with zolpidem.
...CONCLUSIONS: This case, along with previous reports, warrants the
cautious use of zolpidem. Clinicians should be aware that a majority
of these reactions occur in women. It appears that the reactions are
concentration dependent, therefore, dosage reductions should be made
in elderly patients and those with hepatic insufficiency.
===============
[Strong cautions about zolpidem-induced psychosis go back more than a decade]
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8807033&dopt=Abstract
Ann Clin Psychiatry. 1996 Jun;8(2):89-91
Markowitz JS, Brewerton TD.
Department of Psychiatry and Behavioral Sciences, Medical University
of South Carolina, Charleston 29425-0810
Zolpidem-induced psychosis.
...There are several case reports of zolpidem causing psychotic
reactions in patients with no history of psychosis. We report two
additional cases in which zolpidem was implicated in psychotic
reactions characterized by auditory and visual hallucinations as well
as delusional thinking.
...Zolpidem should be used at the lowest effective dose for the least
amount of time as necessary.
...In patients manifesting new-onset or unexplained psychotic
symptoms, zolpidem use should be considered in the differential
diagnosis.
===============
[This is a tangential study, but it is an FDA docket document prepared
by the US Drug Enforcement Administration, and documents the
prevelance with which zolpidem is showing up in suicide attempts,
similar to what is being seen in the Scandanavian studies}:
http://www.fda.gov/ohrms/dockets/dailys/00/may00/053000/c000003.pdf
WHO QUESTIONNAIRE FOR REVIEW OF DEPENDENCE-PRODUCING
PSYCHOACTIVE SUBSTANCES BY THE THIRTY-SECOND EXPERT
COMMITTEE ON DRUG DEPENDENCE
Drug Enforcement Administration
ABUSE OF ZOLPIDEM
...3.1 Zolpidem is abused, diverted and trafficked in the United States.
...3.2. From 1994-1998, the DAWN system has documented a total of 21,860
estimated episodes. The number of estimated episodes increased in 1994 and
1995 and has remained relatively stable from 1996-1998:1422 in 1994; 3918
in 1995, 5444 in 1996; 5453 in 1997 and 5623 in 1998. When normalized
with total annual zolpidem prescriptions (IMS data), the numbers of estimated
DAWN episodes are 62 per 100,000 prescriptions in 1997 and 56 per 100,000
in 1998.
...Zolpidem is taken orally...either in an attempt to commit suicide (75%)
or for its other psychological effects... The typical DAWN episode
involved a white (880/0), female... within the age ranges of 35-45 years
(30%), 25-34 years old (25%). These episodes most often involved an
overdose (910/0) or other unexpected response (30/0). The DAWN reports
found zolpidem used alone on 33% of occasions. When used in combination,
zolpidem was most often taken with alcohol (440/0), or other benzodiazepines
(40%). Large numbers of hospital emergency episodes were reported in
twenty-two US cities.
===============
This site has a host of relevant articles...a search on [ zolpidem and
adverse ] turned up 69 listings. Here are the most relevant:
http://www.ingentaconnect.com
Zolpidem: Delirium with mania in an elderly patient: case report
Source: Reactions, Volume 1, Number 1000, 2004-05-08, pp. 14-15(2)
Zolpidem: Visual hallucinations: case report
Source: Reactions, Volume 1, Number 961, 2003, pp. 16-16(1)
Zolpidem abuse: Euphoria and hyperactivity: case report
Source: Reactions, Volume 1, Number 954, 2003, pp. 16-16(1)
Zolpidem: Delirium and hallucinations: case report
Source: Reactions, Volume 1, Number 912, 2002, pp. 11-11(1)
Zolpidem: Delirium in an elderly patient: case report
Source: Reactions, Volume 1, Number 893, 2002, pp. 16-16(1)
Publisher:Adis International
Zolpidem: Nightmares, delirium and hallucinations: 3 case reports
Source: Reactions, Volume 1, Number 793, 2000, pp. 12-12(1)
Zolpidem: Psychosis in an elderly patient: case report
Source: Reactions, Volume 1, Number 653, 1997, pp. 12-12(1)
Zolpidem: Visual hallucinations and amnesia: 2 case reports
Source: Reactions, Volume 1, Number 611, 1996, pp. 12-12(1)
Zolpidem: Psychosis: 2 case reports
Source: Reactions, Volume 1, Number 613, 1996, pp. 12-12(1)
Zolpidem: Amnesia: 2 case reports
Source: Reactions, Volume 1, Number 614, 1996, pp. 12-12(1)
Zolpidem: Sensory distortions: case report
Source: Reactions, Volume 1, Number 543, 1995, pp. 12-12(1)
Zolpidem: Psychotic disorders in a patient with anorexia: case report
Source: Reactions, Volume 1, Number 466, 1993, pp. 12-12(1)
Zolpidem: Amnesic psychotic effects: 2 case reports
Source: Reactions, Volume 1, Number 396, 1992, pp. 8-8(1)
===============
Other articles that you may want to be aware of:
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10668611&dopt=Abstract
Encephale. 1999 Nov-Dec;25(6):652-7.
Courtet P, Pignay V, Castelnau D, Boulenger JP.
Service Universitaire de Psychiatrie Adultes, Hopital La Colombiere,
INSERM CJF 97-02, Montpellier.
[Abuse of and dependence on zolpidem: a report of seven cases]
[Article in French]
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12850977&dopt=Abstract
Scand J Public Health. 2003;31(3):224-8.
The role of benzodiazepines in elderly suicides.
Carlsten A, Waern M, Holmgren P, Allebeck P.
Department of Social Medicine, University of Goteborg, Sweden.
Anders.Carlsten@apoteket.se
...In Sweden, suicides by drug poisoning have decreased in the
population at large during the past two decades. However, drug
poisoning suicides increased among the elderly during this period.
...The annual fatality ratios for the newer benzodiazepine-like
hypnotics zopiclone and zolpidem appear to be on the rise. CONCLUSION:
Benzodiazepines, especially the hypnotics flunitrazepam and
nitrazepam, are common in drug poisoning suicides in the elderly and
should be prescribed with caution for this age group.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8807033&dopt=Abstract
Ann Clin Psychiatry. 1996 Jun;8(2):89-91.
Zolpidem-induced psychosis.
Markowitz JS, Brewerton TD.
Department of Psychiatry and Behavioral Sciences, Medical University
of South Carolina, Charleston 29425-0810,
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9100733&dopt=Abstract
J Am Geriatr Soc. 1997 Apr;45(4):533-4
Zolpidem-induced psychosis in an older woman.
Pitner JK, Gardner M, Neville M, Mintzer J.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8273252&dopt=Abstract
Ugeskr Laeger. 1993 Dec 20;155(51):4196.
[Withdrawal psychosis and zolpidem]
[Article in Danish]
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9656974&dopt=Abstract
J Toxicol Clin Toxicol. 1998;36(3):195-203
Zolpidem-associated hallucinations and serotonin reuptake inhibition:
a possible interaction.
Elko CJ, Burgess JL, Robertson WO.
Washington Poison Center, Seattle 98125-8012, USA. elko@wapc.org
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1347827&dopt=Abstract
Lancet. 1992 Mar 28;339(8796):809.
Psychotic reactions to zolpidem.
Ansseau M, Pitchot W, Hansenne M, Gonzalez Moreno A.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8832310&dopt=Abstract
Int J Clin Pharmacol Ther. 1996 Jul;34(7):318
Visual hallucinations and amnesia associated with the use of zolpidem.
van Puijenbroek EP, Egberts AC, Krom HJ.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7902519&dopt=Abstract
Lancet. 1993 Dec 11;342(8885):1495-6
More on zolpidem side-effects.
Iruela LM, Ibanez-Rojo V, Baca E.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9018205&dopt=Abstract
Ann Emerg Med. 1997 Feb;29(2):300-1
Zolpidem and hallucinations.
Markowitz JS, Rames LJ, Reeves N, Thomas SG
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8937915&dopt=Abstract
Gen Hosp Psychiatry. 1996 Nov;18(6):452-3
Zolpidem-induced agitation and disorganization.
Hoyler CL, Tekell JL, Silva JA.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12060196&dopt=Abstract
Aust N Z J Psychiatry. 2002 Jun;36(3):425-6
Zolpidem, vascular headache, and hallucinations in an adolescent.
===============
I hope these assist you in your efforts, and again, if there's
anything else I can help you with, just let me know.
pafalafa-ga
search strategy -- Searched Google and several medical literature
sites for combinations of terms:
ambien
zolpidem
suicide
suicidal
suicidality
ideation
psychosis
depression
adverse
ADR |