Note: This document contains side effect information about temazepam. Some of the dosage forms listed on this page may not apply to the brand name Restoril.
More frequent side effects include: dizziness, insomnia, lethargy, and irritability. See below for a comprehensive list of adverse effects.
Applies to temazepam: oral capsule
Oral route (Capsule)
Concomitant use of benzodiazepines and opioids may result in profound sedation, respiratory depression, coma, and death. Reserve concomitant prescribing for patients with inadequate alternative treatment options. Limit dosages and durations to the minimum required and follow patients for signs and symptoms of respiratory depression and sedation.
Along with its needed effects, temazepam (the active ingredient contained in Restoril) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur while taking temazepam:
Incidence not known
Get emergency help immediately if any of the following symptoms of overdose occur while taking temazepam:
Symptoms of overdose
Some side effects of temazepam may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Applies to temazepam: oral capsule
The most commonly reported side effects included drowsiness, headache, and fatigue.
Lightheadedness, slurred speech, and unsteadiness usually occur at the start of treatment and disappear with repeated doses.
Common (1% to 10%): Dizziness, drowsiness, hangover, headache, lethargy, sedation, vertigo
Uncommon (0.1% to 1%): Ataxia, equilibrium loss, faintness, muzziness, sciatica, taste loss, tremor
Rare (0.01% to 0.1%): Dysarthria
Frequency not reported: Amnesia, anterograde amnesia, coma, convulsions, daytime drowsiness, epileptic seizures, extrapyramidal symptoms, extremity tingling, horizontal nystagmus, hypersensitivity to light/noise/physical contact, impaired concentration, lightheadedness, numbness, oversedation, perceptual disturbances, reduced alertness, seizures, slurred speech, unsteadiness
Common (1% to 10%): Anxiety, confusion, depression, euphoria, nervousness, nightmares
Uncommon (0.1% to 1%): Decreased orgasm, disorientation, increased dreaming, irritability, libido changes, unmasking of depression, vivid dreams
Rare (0.01% to 0.1%): Restless sleep
Frequency not reported: Abuse, aggressiveness/aggression, agitation, broken sleep (with vivid dreams), confusional states, delusion, depersonalization, dependence, derealization, disinhibition, excitement, extreme anxiety, hallucinations, hostility, inappropriate behavior, insomnia, mood changes, numbed emotions, other adverse behavioral effects, overstimulation, physical dependence, psychological dependence, psychoses, psychotic manifestations, rage, rebound insomnia, restlessness, sexual arousal, sleep disturbance, stimulation, suicidal attempt, suicidal ideation, tension, withdrawal effects/symptoms
Dependence and numbed emotions usually occur at the start of treatment and disappear with repeated doses.
Common (1% to 10%): Abdominal discomfort, diarrhea, dry mouth, nausea
Uncommon (0.1% to 1%): Gastrointestinal upset, vomiting
Rare (0.01% to 0.1%): Salivation changes
Frequency not reported: Abdominal cramps, constipation, gastrointestinal disturbances
Common (1% to 10%): Fatigue, weakness
Uncommon (0.1% to 1%): Asthenia
Frequency not reported: Falls, hyperacusis, hypothermia, paradoxical reactions, rebound phenomenon, tinnitus
Common (1% to 10%): Blurred vision
Uncommon (0.1% to 1%): Burning eyes
Rare (0.01% to 0.1%): Visual disturbances
Frequency not reported: Diplopia/double vision, photophobia
Double vision usually occurs at the start of treatment and disappears with repeated doses.
Uncommon (0.1% to 1%): Allergic skin reactions, hyperhidrosis, macular rash, pruritus
Rare (0.01% to 0.1%): Skin reactions
Frequency not reported: Alopecia, sweating
Uncommon (0.1% to 1%): Increased neutrophils, leukocytosis
Rare (0.01% to 0.1%): Blood disorders, blood dyscrasias
Frequency not reported: Agranulocytosis, pancytopenia, thrombocytopenia
Uncommon (0.1% to 1%): Increased AST, increased bilirubin
Rare (0.01% to 0.1%): Abnormal liver function, jaundice
Frequency not reported: Increased liver enzymes
Uncommon (0.1% to 1%): Impotence, proteinuria
Rare (0.01% to 0.1%): Incontinence, urinary retention
Uncommon (0.1% to 1%): Palpitations, tachycardia
Rare (0.01% to 0.1%): Hypotension
Frequency not reported: Lowering in blood pressure, mild systolic hypertension, orthostatic hypotension
Uncommon (0.1% to 1%): Backache, leg cramps
Rare (0.01% to 0.1%): Impaired muscular function
Frequency not reported: Muscle pain, muscle weakness
Muscle weakness usually occurs at the start of treatment and disappears with repeated doses.
Respiratory depression usually occurs at the start of treatment and disappears with repeated doses.
Uncommon (0.1% to 1%): Breathlessness, dyspnea
Frequency not reported: Apnea, respiratory depression, worsening of obstructive pulmonary disease, worsening of sleep apnea
Uncommon (0.1% to 1%): Anorexia, increased serum alkaline phosphatase
Frequency not reported: Hyponatremia, loss of appetite
Uncommon (0.1% to 1%): Increased blood urea nitrogen
Rare (0.01% to 0.1%): Fatal anaphylaxis
Frequency not reported: Hypersensitivity reactions, severe anaphylactic reaction, severe anaphylactoid reaction
Frequency not reported: Syndrome of inappropriate antidiuretic hormone secretion (SIADH)
Medically reviewed by BestRx Medical Team Last updated on 1/1/2020.
Source: Drugs.com Restoril