Ambien CR- a controlled release prescription sleep aid.

Adverse Events1

During treatment with AMBIEN CR at daily doses up to 12.5 mg for 3 weeks, the most commonly observed adverse events associated with the use of AMBIEN CR were headache (19%), somnolence (15%), and dizziness (12%). In clinical trials with AMBIEN CR, 3.5% of 201 patients receiving 6.25 mg or 12.5 mg of AMBIEN CR discontinued treatment because of an adverse event. Events most commonly associated with discontinuation were somnolence (1.0%) and dizziness (1.0%).

Incidences of Treatment-emergent Adverse Events in a 3-Week Placebo-controlled Clinical Trial in Adults

(Events reported by at least 1% of patients treated with AMBIEN CR and with an incidence greater than that seen in placebo-treated patients)

Adverse events differ for elderly patients.

Body System/Adverse Event AMBIEN CR 12.5 mg (N=102) Placebo (N=110)

Infections and Infestations

Influenza 3 0
Gastroenteritis 1 0
Labyrinthitis 1 0

Metabolism and Nutrition Disorders

Appetite disorder 1 0

Psychiatric Disorders

Hallucinations* 4 0
Disorientation 3 2
Anxiety 2 0
Depression 2 0
Psychomotor retardation 2 0
Binge eating 1 0
Depersonalization 1 0
Disinhibition 1 0
Euphoric mood 1 0
Mood swings 1 0
Stress symptoms 1 0

Nervous System Disorders

Headache 19 16
Somnolence 15 2
Dizziness 12 5
Memory disorders** 3 0
Balance disorder 2 0
Disturbance in attention 2 0
Hypoesthesia 2 1
Ataxia 1 0
Paraesthesia 1 0

Eye Disorders

Visual disturbance 3 0
Eye redness 2 0
Vision blurred 2 1
Altered visual depth perception 1 0
Asthenopia 1 0

Ear and Labyrinth Disorders

Vertigo 2 0
Tinnitus 1 0

Respiratory, Thoracic and Mediastinal Disorders

Throat irritation 1 0

Gastrointestinal Disorders

Nausea 7 4
Constipation 2 0
Abdominal discomfort 1 0
Abdominal tenderness 1 0
Frequent bowel movements 1 0
Gastroesophageal reflux disease 1 0
Vomiting 1 0

Skin and Subcutaneous Tissue Disorders

Rash 1 0
Skin wrinkling 1 0
Urticaria 1 0

Musculoskeletal and Connective Tissue Disorders

Back pain 4 3
Myalgia 4 0
Neck pain 1 0

Reproductive System and Breast Disorders

Menorrhagia 1 0

General Disorders and Administration Site Conditions

Fatigue 3 2
Asthenia 1 0
Chest discomfort 1 0

Investigations

Blood pressure increased 1 0
Body temperature increased 1 0

Injury, Poisoning and Procedural Complications

Contusion 1 0

Social Circumstances

Exposure to poisonous plant 1 0

* Hallucinations included hallucinations NOS as well as visual and hypnagogic hallucinations.

† Memory disorders include: memory impairment, amnesia, anterograde amnesia.

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Important safety information:

AMBIEN CR is indicated for the treatment of insomnia.

In elderly or debilitated patients, or patients with hepatic insufficiency, the recommended dose is 6.25 mg and patients should be closely monitored. Due to its rapid onset of action, patients should take AMBIEN CR right before going to bed and when ready for sleep.

Patients should not take AMBIEN CR unless they are prepared to get a full night's sleep (7 to 8 hours) to avoid residual effects.

Until they know how it will affect their physical or mental performance upon awakening, patients should not drive or operate hazardous machinery after taking AMBIEN CR or any other sleep medication. Complex behaviors such as somnambulism, including driving or eating while not fully awake, with amnesia for the event, have been reported in patients who have taken a sedative hypnotic. Discontinuation of AMBIEN CR should be strongly considered for patients reporting such complex behaviors. Rare cases of angioedema have been reported in patients after taking sedative hypnotics. Patients who develop angioedema should not be rechallenged. The most commonly observed adverse effects in controlled clinical trials were headache, somnolence, and dizziness. Because individuals with a history of addiction or substance abuse are at increased risk of habituation and dependence, they should be under careful surveillance when receiving AMBIEN CR or any o ther hypnotic. AMBIEN CR is a Schedule IV controlled substance. US clinical trial experience from zolpidem does not reveal any clear evidence for withdrawal syndrome.

Please refer to the full prescribing information.

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References:

1 AMBIEN CR Prescribing Information.