OpenClaim

Ramelteon Side Effects

The most commonly reported side effects of ramelteon include initial insomnia, middle insomnia, and somnolence, based on 7,323 FDA adverse event reports from 2005 to 2025. 9.1% of reports found the drug to be ineffective.

Ramelteon side effects

Percentages show how often each reaction appears relative to total reports for ramelteon.

1
Drug Ineffective9.1%666
2
Initial Insomnia6.0%436
3
Middle Insomnia5.0%366
4
Somnolence3.6%262
5
Drug Ineffective3.5%254
6
Insomnia3.2%234
7
Off Label Use3.1%230
8
Poor Quality Sleep2.8%206
9
Nausea2.3%171
10
Fall2.3%170
11
Nausea2.3%165
12
Pyrexia2.3%165
13
Insomnia2.2%163
14
Fatigue2.2%159
15
Dizziness2.2%158

These are voluntary reports and do not establish that ramelteon caused these reactions.

Report severity

55.1%Serious4,033 reports
28.5%Hospitalizations2,085 reports
10.9%Fatal796 reports

Seriousness is determined by the reporter, not by OpenClaim.

Ramelteon drug interactions

Other drugs that appear in adverse event reports alongside ramelteon. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Sodium-oxybate3.7%274
2
Quetiapine-fumarate2.4%179
3
Eszopiclone1.6%115
4
Zolpidem-tartrate1.6%115
5
Aripiprazole1.5%113
6
Esomeprazole1.5%107
7
Pregabalin1.3%95
8
Lamotrigine1.3%94
9
Suvorexant1.2%86
10
Omeprazole1.0%70
11
Lansoprazole1.0%70
12
Risperidone0.9%69
13
Alprazolam0.9%67
14
Duloxetine-hydrochloride0.9%66
15
Pembrolizumab0.8%60

Taken alongside

1
Acetaminophen10.5%770
2
Aspirin8.5%622
3
Furosemide7.7%567
4
Zolpidem-tartrate7.5%551
5
Levothyroxine-sodium7.5%546
6
Amlodipine6.9%506
7
Atorvastatin-calcium6.7%490
8
Trazodone-hydrochloride6.5%479
9
Clonazepam6.4%472
10
Gabapentin6.3%463
11
Magnesium-oxide5.8%428
12
Omeprazole5.7%421
13
Lansoprazole5.6%407
14
Ergocalciferol5.5%405
15
Oxycodone5.3%389

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports ramelteon side effects

53.5% of ramelteon adverse event reports involve female patients and 38.0% involve male patients. The largest age group is adult at 53%. These figures reflect who reports side effects, not underlying risk.

Sex

Female53.5%
Male38.0%
Unknown8.5%

Age group

< 20.4%
2–111.3%
12–171.2%
18–6452.7%
65+44.4%

What is ramelteon used for

Conditions and purposes for which patients were taking ramelteon when the adverse event was reported.

Acute Lymphocytic LeukaemiaAdjustment DisorderAffective DisorderAfrican TrypanosomiasisAggressionAltered State Of ConsciousnessAntiemetic Supportive CareAnxietyAnxiety DisorderAttention Deficit/hyperactivity DisorderAutism Spectrum DisorderAnxietyAnxiety DisorderAutism Spectrum DisorderBehavioural And Psychiatric Symptoms Of Dementia

Showing 15 of 166 indications

Ramelteon brand names and reporting trend

Ramelteon is sold under the brand name Rozerem.

Brand names

Rozerem1,421

Quarterly reports (20052025)

20052010201520202025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking ramelteon with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.