Belsomra

brand

Belsomra Side Effects

Unusual dreams may occur. If this effect persists or worsens, tell your doctor or pharmacist promptly.

Suvorexant may make you sleepy during the day. Tell your doctor if you have daytime drowsiness. Your dose may need to be adjusted.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor right away if you have any serious side effects, including: mental/mood changes (such as depression, thoughts of suicide), temporary weakness in your legs.

This medication may cause sleep paralysis, which is a temporary inability to move or talk (for up to several minutes) while you are going to sleep or waking up.

Rarely, after taking this drug, people have gotten out of bed and driven vehicles while not fully awake ("sleep-driving"). People have also sleepwalked, prepared/eaten food, made phone calls, or had sex while not fully awake. Often, these people do not remember these events. This problem can be dangerous to you or to others. If you find out that you have done any of these activities after taking this medication, tell your doctor right away. Your risk is increased if you use alcohol or other medications that can make you drowsy while taking suvorexant.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
  • hypercholesterolemia
  • acute confusion
  • suicidal ideation
  • depression
  • behavioral disorders
  • cataplexy
  • upper respiratory infection
  • xerostomia
  • pruritus of skin
  • drowsy
  • concentration difficulty
  • memory impairment
  • dizziness
  • gait abnormality
  • headache disorder
  • palpitations
  • cough
  • diarrhea
  • paresthesia
  • complex sleep behavior
  • dream disorder
  • sleep paralysis
  • hypnagogic hallucination
  • symptoms of anxiety
  • tachycardia

Drug Interactions

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

Other medications can affect the removal of suvorexant from your body, which may affect how suvorexant works. Examples include certain azole antifungals (such as itraconazole, ketoconazole), certain drugs used to treat seizures (such as carbamazepine, phenytoin), clarithromycin, cobicistat, certain hepatitis C virus protease inhibitors (such as boceprevir, telaprevir), certain HIV protease inhibitors (such as indinavir, ritonavir), nefazodone, rifampin, telithromycin, among others.

The risk of serious side effects (such as slow/shallow breathing, severe drowsiness/dizziness) may be increased if this medication is taken with other products that may also cause drowsiness or breathing problems. Tell your doctor or pharmacist if you are taking other products such as opioid pain or cough relievers (such as codeine, hydrocodone), alcohol, marijuana (cannabis), other drugs for sleep or anxiety (such as alprazolam, lorazepam, zolpidem), muscle relaxants (such as carisoprodol, cyclobenzaprine), or antihistamines (such as cetirizine, diphenhydramine).

Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.