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Suvorexant Side Effects

For the Consumer

Applies to suvorexant: oral tablet

As well as its needed effects, suvorexant may cause unwanted side effects that require medical attention.

Major Side Effects

If any of the following side effects occur while taking suvorexant, check with your doctor immediately:

More common:
  • Sleepiness or unusual drowsiness
Less common:
  • Unusual or abnormal dreams
Incidence not known:
  • Changes in behavior
  • discouragement
  • fear or nervousness
  • feeling sad or empty
  • irritability
  • lack of appetite
  • loss of interest or pleasure
  • loss of memory
  • problems with memory
  • seeing, hearing, or feeling things that are not there
  • temporary inability to move or talk for up to several minutes while you are going to sleep or wake up
  • temporary weakness in your legs
  • thoughts of killing oneself
  • tiredness
  • trouble concentrating

Minor Side Effects

Some suvorexant side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

More common:
  • Headache
Less common:
  • Body aches or pain
  • chills
  • cough
  • diarrhea
  • difficulty with breathing
  • dizziness
  • dry mouth
  • ear congestion
  • fever
  • loss of voice
  • nasal congestion
  • runny nose
  • sneezing
  • sore throat
  • unusual tiredness or weakness

For Healthcare Professionals

Applies to suvorexant: oral tablet

General

The most common adverse reaction was somnolence.[Ref]

Gastrointestinal

Common (1% to 10%): Diarrhea, dry mouth[Ref]

Nervous system

Common (1% to 10%): Headache, somnolence, dizziness[Ref]

Psychiatric

Common (1% to 10%): Abnormal dreams[Ref]

Respiratory

Common (1% to 10%): Cough, upper respiratory tract infection[Ref]

References

1. "Product Information. Belsomra (suvorexant)." Merck & Company Inc, Whitehouse Station, NJ.

It is possible that some side effects of suvorexant may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

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