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Midazolam Injection SDZ: Uses, Side Effects and Dosage

Updated:
Facts
Status:
Prescription (Rx) TARGETED SUBSTANCES (CDSA IV) Current status: Dormant
Strength:
1 mg, 5 mg
Active ingredient:
ATC code:

Patient Medication Information: uses, side effects, how to take - Midazolam Injection SDZ

Serious Warnings and Precautions

Serious Heart and Breathing Problems: Serious, and sometimes fatal, heart and breathing problems have occurred in people taking MIDAZOLAM INJECTION SDZ. MIDAZOLAM INJECTION SDZ should only be used in a healthcare setting where you can be closely monitored and where there is access to oxygen and the appropriate medication and equipment required for resuscitation.

Addiction, Abuse and Misuse: Even if you are given MIDAZOLAM INJECTION SDZ exactly as prescribed, you are at risk for abuse, misuse, addiction, physical dependence and withdrawal. Abuse and misuse can result in an overdose or death, especially if you take MIDAZOLAM INJECTION SDZ with:

  • opioids
  • alcohol or
  • illicit drugs

Your healthcare professional should:

  • talk to you about the risks of treatment with MIDAZOLAM INJECTION SDZ as well as other treatment (including non-drug) options
  • assess your risk for these behaviours before prescribing MIDAZOLAM INJECTION SDZ
  • monitor you while you are taking MIDAZOLAM INJECTION SDZ for the signs and symptoms of misuse and abuse. If you feel like you are craving MIDAZOLAM INJECTION SDZ, or not using it as directed, talk to your healthcare professional right away.

Store MIDAZOLAM INJECTION SDZ in a secure place to avoid theft or misuse.

Withdrawal: If you suddenly stop taking MIDAZOLAM INJECTION SDZ, lower your dose too fast, or switch to another medication, you can experience severe or life-threatening withdrawal symptoms (see Other warnings you should know about)

  • Always contact your healthcare professional before stopping, or lowering your dose of MIDAZOLAM INJECTION SDZ or changing your medicine.

MIDAZOLAM INJECTION SDZ with Opioids: Taking MIDAZOLAM INJECTION SDZ with opioid medicines can cause:

  • severe drowsiness
  • decreased awareness
  • breathing problems
  • coma
  • death

What is MIDAZOLAM INJECTION SDZ used for?

  • MIDAZOLAM INJECTION SDZ is used before surgery and other medical procedures. It helps to cause drowsiness, decrease anxiety, and to decrease your memory of the procedure. It is also used in patients in the ICU (Intensive Care Unit) who are sedated and on breathing machines.

If you are 65 years or older, talk to your healthcare professional before starting MIDAZOLAM INJECTION SDZ. MIDAZOLAM INJECTION SDZ may not be an effective treatment for you and you may be more sensitive to experiencing side effects.

How does MIDAZOLAM INJECTION SDZ work?

MIDAZOLAM INJECTION SDZ belongs to a group of drugs called benzodiazepines. It works by calming the brain and nerves.

What are the ingredients in MIDAZOLAM INJECTION SDZ?

Medicinal ingredients: midazolam

Non-medicinal ingredients: hydrochloric acid, sodium chloride

MIDAZOLAM INJECTION SDZ comes in the following dosage forms:

Solution; 1 mg / mL, 5 mg / mL

Do not use MIDAZOLAM INJECTION SDZ if:

  • you are allergic (hypersensitivity) to midazolam, benzodiazepines or any of the other ingredients in MIDAZOLAM INJECTION SDZ (See What are the ingredients in MIDAZOLAM INJECTION SDZ?)
  • you have severe lung problems, such as chronic obstructive pulmonary disease (COPD)
  • you have increased pressure in your eye (acute narrow angle glaucoma)

To help avoid side effects and ensure proper use, talk to your healthcare professional before you take MIDAZOLAM INJECTION SDZ. Talk about any health conditions or problems you may have, including if you:

  • have heart or lung problems
  • have liver or kidney problems
  • have myasthenia gravis, a disease that causes muscle weakness
  • have ever had a problem with:

    • substance abuse, including prescribed or illegal drugs, or
    • alcohol

  • have ever had seizures or convulsions (violent uncontrollable shaking of the body with or without loss of consciousness)
  • have ever had hallucinations (seeing or hearing things that are not there) or other severe mental health problems
  • have ever had skin problems
  • have ever had stomach or gut problems
  • have ever had severe allergic reactions
  • have vision problems such as blurred vision
  • are pregnant or planning to become pregnant

  • are breastfeeding. MIDAZOLAM INJECTION SDZ passes into breastmilk.

Other warnings you should know about:

Withdrawal: If you suddenly stop your treatment, lower your dose too fast, or switch to another medication, you can experience withdrawal symptoms that can range from mild symptoms to severe or life threatening. Some of your withdrawal symptoms can last for months after you stop MIDAZOLAM INJECTION SDZ.

Your risk of going through withdrawal is higher if you are taking MIDAZOLAM INJECTION SDZ for a long time or at high doses. However, symptoms can still occur if you are taking MIDAZOLAM INJECTION SDZ as directed for a short period of time or slowly reducing the dose.

The symptoms of withdrawal often resemble the condition that you are being treated for. After stopping your treatment, it may be hard to tell if you are experiencing withdrawal or a return of your condition (relapse).

Tell your healthcare professional right away if you experience any symptoms of withdrawal after changing or stopping your treatment.

Severe symptoms of withdrawal include:

  • feeling like you cannot move or respond (catatonia)
  • severe confusion, shivering, irregular heartrate and excessive sweating (delirium tremens)
  • feeling depressed
  • feeling disconnected from reality (dissociation)
  • seeing or hearing things that are not there (hallucinations)
  • overactive behavior and thoughts (mania)
  • believing in things that are not true (psychosis)
  • convulsions (seizures), including some that do not stop
  • thoughts or actions of suicide

For other symptoms of withdrawal, see the Serious side effects and what to do about them table (below).

To reduce your chances of going through withdrawal:

  • always talk to your healthcare professional before stopping or reducing your dose of MIDAZOLAM INJECTION SDZ or changing medications
  • always follow your healthcare professional’s instructions on how to reduce your dose carefully and safely
  • tell your healthcare professional right away if you experience any unusual symptoms after changing or stopping your treatment

MIDAZOLAM INJECTION SDZ with Opioids: Taking MIDAZOLAM INJECTION SDZ with opioid medicines can cause severe drowsiness and breathing problems.

Tell your healthcare professional if you:

  • are taking opioid medicines
  • are prescribed an opioid medicine after you start taking MIDAZOLAM INJECTION SDZ

Driving and Using Machines: Do NOT drive or operate heavy machinery or do tasks that require special attention until you know how taking an opioid medicine and MIDAZOLAM INJECTION SDZ affects you. Even if you are not taking MIDAZOLAM INJECTION SDZ with an opioid you should not drive or do other tasks that require attention for at least 24 hours after taking MIDAZOLAM INJECTION SDZ, or until all of the effects, such as drowsiness, have worn off.

Falls and Fractures: Benzodiazepines like MIDAZOLAM INJECTION SDZ can cause you to feel sleepy, dizzy, and affect your balance. This increases your risks of falling, which can cause fractures or other fall related-injuries especially if you:

  • are talking other sedatives
  • consume alcohol
  • are elderly or
  • have a condition that causes weakness or frailty

Tell your healthcare professional about all the medicines you take, including any drugs, vitamins, minerals, natural supplements or alternative medicines.

The following may interact with MIDAZOLAM INJECTION SDZ:

  • barbiturates and other medicines that cause drowsiness or decrease anxiety
  • medicines used to treat fungal infections, such as itraconazole and fluconazole
  • erythromycin, an antibiotic used to treat bacterial infections
  • saquinavir, a medicine used to treat HIV/AIDS
  • sodium valproate, a medicine used to prevent seizures
  • alcohol

How to take MIDAZOLAM INJECTION SDZ:

  • MIDAZOLAM INJECTION SDZ will be given to you either as an injection into your muscle or an injection directly into your vein.
  • Your healthcare professional will slowly decrease your dose and will tell you when to stop taking the medicine. Always follow your healthcare professional’s instructions on how to lower your dose carefully and safely to avoid experiencing withdrawal symptoms.

Usual dose:

Your healthcare professional will decide on the dose that is right for you based on your age, your weight and the type of medical procedure you are having.

Serious Drug Interactions

Taking MIDAZOLAM INJECTION SDZ and opioids may cause:

  • severe drowsiness
  • trouble breathing
  • coma
  • death

Overdose:

If you think you, or a person you are caring for, have taken too much MIDAZOLAM INJECTION SDZ, contact a healthcare professional, hospital emergency department, or regional poison control centre immediately, even if there are no symptoms.

Missed Dose:

MIDAZOLAM INJECTION SDZ will be given to you in a healthcare setting. Your healthcare professional will make sure you do not miss a dose.

What are possible side effects from using MIDAZOLAM INJECTION SDZ?

These are not all the possible side effects you may have when taking MIDAZOLAM INJECTION SDZ. If you experience any side effects not listed here, tell your healthcare professional.

Side effects may include:

  • falls and fractures
  • headache
  • dizziness
  • drowsiness
  • feeling agitated
  • confusion
  • nausea, vomiting
  • hiccups
  • cough
  • skin rash, especially in children

Serious side effects and what to do about them

Symptom / effectTalk to your healthcare professionalStop taking drug and get immediate medical help
Only if severeIn all cases
UNKNOWN
Overdose: extreme sleepiness, confusion, slurred speech, slow reflexes, slow shallow breathing, coma, loss of balance and coordination, uncontrolled rolling of the eyes, and low blood pressure✓
Respiratory Depression: slow, shallow or weak breathing.✓

Withdrawal:

Severe symptoms include:

Catatonia: feeling like you cannot move or respond

Delirium Tremens: severe confusion, shivering, irregular

✓

Serious side effects and what to do about them

Symptom / effectTalk to your healthcare professionalStop taking drug and get immediate medical help
Only if severeIn all cases

heartrate and excessive sweating

Feeling depressed

Dissociation: feeling disconnected from reality

Hallucinations: seeing or hearing things that are not there

Mania: overactive behaviour and thoughts

Psychosis: believing in things that are not true

Convulsions: (seizures – including some that do not stop): loss of consciousness with uncontrollable shaking

Thoughts or actions of suicide

Other symptoms include:

stomach cramps; trouble remembering or concentrating; diarrhea; feeling uneasy or restless; severe anxiety or panic-attacks; headache; sensitivity to light, noise or physical contact; shaking; vomiting; trouble sleeping; feeling irritable; muscle pain or stiffness; a burning or prickling feeling in the hands, arms, legs or feet; sweating.

Allergic Reaction: rash, hives, swelling of the face, lips, tongue or throat, difficulty swallowing or breathing.✓
Injection Site Reaction: pain, burning, redness, warmth or swelling at the injection site.✓

If you have a troublesome symptom or side effect that is not listed here or becomes bad enough to interfere with your daily activities, tell your healthcare professional.

Reporting Side Effects

You can report any suspected side effects associated with the use of health products to Health Canada by:

  • Visiting the Web page on Adverse Reaction Reporting (https://www.canada.ca/en/health-canada/services/drugs-health-products/medeffect-canada.html) for information on how to report online, by mail or by fax; or
  • Calling toll-free at 1-866-234-2345.

NOTE: Contact your health professional if you need information about how to manage your side effects. The Canada Vigilance Program does not provide medical advice.

Storage:

Store between 15°C and 30°C. Protect from light. Discard unused portion 28 days after initial puncture.

Keep out of reach and sight of children.

If you want more information about MIDAZOLAM INJECTION SDZ:

  • Talk to your healthcare professional
  • Find the full product monograph that is prepared for healthcare professionals and includes this Patient Medication Information by visiting the Health Canada website: (https://www.canada.ca/en/health-canada/services/drugs-health-products/drug-products/drug-product-database.html; the manufacturer’s website (www.sandoz.ca), or by calling 1-800-361-3062.

Last Revised: December 13, 2021

About this document

Source: Health Canada – Drug Product Database (DPD) and product monographs · DIN (Drug Identification Number): 02382873

Revision date stated in the text: December 13, 2021

Found a mistake? Write to us via the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Drug information for Midazolam Injection SDZ

Rx or OTC
Prescription (Rx)?
DIN 02382873, 02382903
Schedule(s) TARGETED SUBSTANCES (CDSA IV)
Active ingredient(s) Midazolam
Dosage form(s) Solution
Route(s) of administration Intravenous, Intramuscular
Drug class (WHO ATC)
  1. N Nervous system drugs
    1. N05 Psycholeptics
      1. N05C Hypnotics and sedatives
        1. N05CD Benzodiazepine derivative hypnotics and sedatives
          1. N05CD08 Midazolam
Company SANDOZ CANADA INCORPORATED
Current status Dormant
Current status date August 1, 2018
Strengths and forms
DIN Strength Dosage form(s) Current status
02382873 1 MG Solution Dormant August 1, 2018
02382903 5 MG Solution Dormant August 1, 2018

Source: Health Canada – Drug Product Database (DPD) and product monographs, data as of November 1, 2026. Data from the Health Canada Drug Product Database, as published there. Not a substitute for the advice of a doctor or pharmacist.