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temazepam Side Effects

Also known as: Restoril

Analysis of 36,917 adverse event reports submitted to the FDA from 2001 to 2025.

Total Reports

36,917

Death-Related

7,405

20.1% of reports

Hospitalizations

12,410

33.6% of reports

Top Indication

Product Used For Unknown Indication

Most Reported Adverse Reactions

FATIGUE
2,804
DRUG INEFFECTIVE
2,413
NAUSEA
2,399
PAIN
2,271
HEADACHE
2,234
TOXICITY TO VARIOUS AGENTS
2,129
DIARRHOEA
1,790
DYSPNOEA
1,757
INSOMNIA
1,672
DEATH
1,664
DIZZINESS
1,654
FALL
1,632
OFF LABEL USE
1,587
ANXIETY
1,497
ASTHENIA
1,435
BACK PAIN
1,401
COMPLETED SUICIDE
1,357
VOMITING
1,350
CONSTIPATION
1,306
PNEUMONIA
1,304

Who Reports Side Effects

Gender Distribution

Female 20,878 (60%)
Male 13,668 (39%)
Unknown 68

Age Distribution

0-17 212 (1%)
18-44 4,892 (20%)
45-64 10,159 (41%)
65-74 5,183 (21%)
75+ 4,589 (18%)

Reporting Trend by Year

2001 2025

Reactions in Death Reports

Top reactions reported in 7,405 reports where death was an outcome. These are voluntarily reported and do not establish causation.

Reaction Reports
DEATH 1,658
TOXICITY TO VARIOUS AGENTS 1,656
COMPLETED SUICIDE 1,349
OVERDOSE 551
DRUG ABUSE 537
CARDIO-RESPIRATORY ARREST 379
CARDIAC ARREST 377
FATIGUE 310
PAIN 302
PNEUMONIA 292
DRUG INTERACTION 286
DYSPNOEA 280
PYREXIA 257
HYPERTENSION 256
OFF LABEL USE 253
NAUSEA 235
RENAL FAILURE 226
HEADACHE 225
CONSTIPATION 215
HYPOTENSION 215

Reactions in Hospitalization Reports

Top reactions in 12,410 reports where hospitalization was an outcome.

Reaction Reports
DYSPNOEA 1,055
PNEUMONIA 1,022
NAUSEA 978
FALL 911
FATIGUE 880
DIARRHOEA 801
VOMITING 781
PAIN 756
ASTHENIA 727
PYREXIA 676
DIZZINESS 668
DEHYDRATION 635
HEADACHE 635
HYPOTENSION 613
ANXIETY 606
WEIGHT DECREASED 560
CHEST PAIN 535
DEPRESSION 527
URINARY TRACT INFECTION 524
INSOMNIA 520

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What the FAERS Data Reveals About temazepam Side Effects

The FDA Adverse Event Reporting System (FAERS) contains 36,917 voluntary reports linked to temazepam and its brand equivalents (Restoril), spanning 2001 through 2025. Of those, 7,405 (20.1%) listed death as an outcome and 12,410 (33.6%) involved hospitalization. The most common indication reported alongside adverse events was Product Used For Unknown Indication.

Demographic breakdowns help contextualize who is being exposed to the drug. Of reports with known sex, 60% were female and 39% male; age distribution skews toward 45-64, with 10,159 reports in that bracket. The single most reported reaction is fatigue with 2,804 submissions, followed by drug ineffective and nausea.

FAERS is a signal-detection tool, not a scorecard. Reports are voluntary, and a single case may list multiple suspect drugs, so numbers above should not be read as incidence rates or per-patient risk. Widely prescribed drugs naturally accumulate more reports than niche therapies even when individual risk is low. These aggregates are useful for spotting patterns that merit further pharmacovigilance, not for choosing between medications. This page is for educational reference only and is not medical advice — speak with a licensed clinician about any side-effect concerns.