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Remimazolam

Generic name: remimazolam [ REM-i-MAZ-oh-lam ]
Brand name: Byfavo
Dosage form: intravenous powder for injection (20 mg)
Drug class: Benzodiazepines

Medically reviewed by Drugs.com on Oct 20, 2021. Written by Cerner Multum.

What is remimazolam?

Remimazolam is a benzodiazepine (ben-zoe-dye-AZE-eh-peen) that is used to help you relax before having a minor surgery, dental work, or other medical procedure.

Remimazolam may also be used for purposes not listed in this medication guide.

Warnings

Remimazolam can slow or stop your breathing, especially if you have recently used an opioid medication, alcohol, or other drugs that can slow your breathing.

Before taking this medicine

You should not be treated with remimazolam if you are allergic to remimazolam or dextran 40.

Remimazolam may harm an unborn baby, and generally should not be used during pregnancy.

Anesthesia may affect brain development in a young child or unborn baby (when used in the mother), which may lead to learning or behavior problems later in life. Long surgeries or repeated procedures pose the highest risks.

Anesthesia may still be necessary for a life-threatening condition, medical emergency, or surgery to correct a birth defect. Your doctor can inform you about all medicines given during a surgery or procedure.

Do not breastfeed within 5 hours after using remimazolam. If you use a breast pump during this time, throw out the milk and do not feed it to your baby.

How is remimazolam given?

Midazolam is injected into a vein by a healthcare provider.

Remimazolam is usually given as a single dose just before a surgery or medical procedure.

Remimazolam can make you very drowsy, dizzy, or light-headed. These effects may last longer in older adults. Use caution to avoid falling or accidental injury after you have received remimazolam. You may need help getting out of bed for several hours.

You will be watched to make sure the medication is working and does not cause harmful side effects.

Your breathing, blood pressure, oxygen levels, and other vital signs will be watched closely.

What happens if I miss a dose?

In a medical setting you are not likely to miss a dose.

What happens if I overdose?

In a medical setting an overdose would be treated quickly.

What should I avoid after receiving remimazolam?

Do not drink alcohol shortly after receiving remimazolam.

Remimazolam can cause extreme drowsiness that may last for several hours after you have received the medication. Older adults may feel sleepy for even longer.

Avoid driving or doing anything that requires you to be awake and alert until the effects of remimazolam have worn off completely.

Remimazolam side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Remimazolam can slow or stop your breathing, especially if you have recently used an opioid medication, alcohol, or other drugs that can slow your breathing. Your caregivers will watch you for symptoms such as weak or shallow breathing.

Tell your medical caregivers right away if you have:

  • weak or shallow breathing;

  • confusion;

  • slow heartbeats; or

  • a light-headed feeling, like you might pass out.

Drowsiness or dizziness may last longer in older adults. Use caution to avoid falling or accidental injury.

Common side effects of remimazolam may include:

  • feeling light-headed;

  • shallow breathing; or

  • changes in blood pressure.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect remimazolam?

Shortly after you are treated with remimazolam, using other drugs that make you sleepy or slow your breathing can cause dangerous side effects or death. Ask your doctor before using opioid medicine, a sleeping pill, a muscle relaxer, or medicine for anxiety or seizures.

Other drugs may affect remimazolam, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all other medicines you use.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.