diazepam vs midazolam
Side-by-side comparison of diazepam and midazolam Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
No significant adverse interactions with commonly used premedications or drugs used during anesthesia and surgery (including atropine, scopolamine, glycopyrrolate, diazepam, hydroxyzine, d-tubocurarine, succinylcholine and other nondepolarizing muscle relaxants) or topical local anesthetics (including lidocaine, dyclonine HCl and Cetacaine) have been observed in adults or pediatric patients.
Recommendation: No specific dose changes are usually required, but your medical team will still monitor your reaction.
Diazepam (Valium) is a medicine that can help with anxiety, muscle spasms, and seizures. It belongs to a class of drugs called benzodiazepines, which work by slowing down the brain.
Midazolam is a medicine that makes you feel calm, relaxed, and sleepy. It can also cause you to forget things that happen while you are taking it.
Diazepam can help manage anxiety disorders or provide short-term relief from anxiety symptoms. It can also relieve symptoms of alcohol withdrawal, such as shaking or agitation. Additionally, diazepam can help with muscle spasms and may be used with other medicines to treat seizures.
Midazolam is used to sedate you before a surgery or procedure to help you relax and feel less anxious. It can also be used to help you feel calm during procedures like bronchoscopies or endoscopies. Midazolam can also be used to start general anesthesia before you get other medicines.
Diazepam works by increasing the effects of a natural chemical in the brain called GABA. GABA helps to calm the brain and nerves. This can reduce anxiety, relax muscles, and prevent seizures.
Midazolam belongs to a class of drugs called benzodiazepines. It works by slowing down activity in your brain and nervous system. This helps to reduce anxiety, promote relaxation, and cause sleepiness.
- • Drowsiness
- • Fatigue
- • Muscle weakness
- • Uncoordinated movements
- • Decreased breathing rate
- • Tenderness at the injection site
- • Pain during injection
- Harm from certain substances 9,167
- Medicine not working 7,080
- Misuse of medicine 7,019
- Feeling sick to your stomach 6,144
- Feeling tired 5,714
- The medicine did not work 2,984
- Used for a purpose not approved 2,237
- Convulsions 1,373
- Low blood pressure 1,296
- Medicine affecting another medicine 1,088
Diazepam can be habit-forming and can cause serious side effects, including breathing problems, coma, and even death, especially when taken with opioid pain medicines or alcohol. You should not stop taking diazepam suddenly, as this can cause withdrawal symptoms. Talk to your doctor about how to slowly stop taking diazepam.
Midazolam can cause serious breathing problems, including slowed or stopped breathing. This is more likely to happen if you are also taking opioid pain medicines. You must be closely monitored by trained medical staff while receiving midazolam. Make sure the facility has the equipment and medicines needed to treat breathing problems immediately.
Diazepam may harm an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if diazepam passes into breast milk, so talk to your doctor before breastfeeding.
Tell your doctor if you are pregnant or plan to become pregnant. Midazolam may harm an unborn baby. It is not known if midazolam passes into breast milk. Talk to your doctor about the risks and benefits of using this medicine while breastfeeding.
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How to Read This diazepam vs midazolam Comparison
diazepam is classified in the Benzodiazepine drug class, while midazolam sits within the Benzodiazepine class. Because both drugs share the same classification, they are often considered interchangeable in theory — but clinical outcomes rarely track that cleanly. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, diazepam has 35,124 submissions while midazolam has 8,978. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to there are no known harmful interactions between these two drugs when they are used together for medical procedures.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between diazepam and midazolam — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.