{"formatVersion":"1.1","id":"https://www.mentalhealth.com/library/flurazepam-dalmane-uses-dosage-side-effects","path":"/library/flurazepam-dalmane-uses-dosage-side-effects","url":"https://www.mentalhealth.com/library/flurazepam-dalmane-uses-dosage-side-effects","title":"Flurazepam (Dalmane)","family":"Library detail","description":"Flurazepam (Dalmane) is an anti-anxiety drug that treats insomnia and restlessness. Learn more about how it is used, interactions, and more.","language":"en-US","access":{"audience":"public","indexable":true},"provenance":{"sourceUrl":"https://www.mentalhealth.com/library/flurazepam-dalmane-uses-dosage-side-effects","wordpressId":"258","contentCompleteness":"complete","dateScope":"original-source"},"authors":[{"@type":"Person","@id":"https://www.mentalhealth.com/people/jenni-jacobsen#person","name":"Jenni Jacobsen, Ph.D.","url":"https://www.mentalhealth.com/people/jenni-jacobsen"}],"reviewer":{"@type":"Person","@id":"https://www.mentalhealth.com/people/amy-shelby#person","name":"Amy Shelby","url":"https://www.mentalhealth.com/people/amy-shelby"},"dates":{"datePublished":"2022-11-22T19:00:00Z","dateModified":"2025-09-17T06:14:17Z","lastReviewed":"2022-11-23"},"content":{"html":"

Flurazepam (Dalmane)

Written by \"\"Jenni Jacobsen, Ph.D.Medically reviewed by \"\"Amy Shelby

Published on · Updated on

Flurazepam, often sold under the brand name Dalmane, is a benzodiazepine that is used to treat insomnia. Like other benzodiazepines, flurazepam works by slowing down the nervous system.

\"One

Key takeaways

  • Flurazepam is a benzodiazepine prescribed for insomnia that slows activity in the central nervous system.
  • Drowsiness, dizziness, and impaired alertness can occur, and its effects may persist beyond the night of use.
  • Physical dependence and interactions with alcohol or other sedating substances are important treatment risks.

Flurazepam brand names

The most common brand names associated with flurazepam are Dalmane and Dalmadorm.

What is flurazepam prescribed for?

Flurazepam is usually prescribed for the treatment of insomnia (trouble sleeping). It belongs to a class of medicines called benzodiazepines, which also includes diazepam (Valium) and alprazolam (Xanax).

How does flurazepam work?

Flurazepam works by slowing activity in the brain. Like all benzodiazepines, it affects specific benzodiazepine receptors in the central nervous system⁠[1]. This in turn makes it easier to fall asleep.

How is flurazepam usually taken?

Flurazepam usually comes in tablets or capsules and is taken by mouth. As it is used to treat insomnia, it should be taken just before bedtime. The prescription label will indicate exactly what dosage should be taken. If you do not understand the instructions, please consult your doctor. 

The typical dose of flurazepam is 15 mg or 30 mg. Do not take a double dose if you miss one.

Your sleep problems should have improved after seven to 10 days from the first dose⁠[2]. Inform your doctor if sleep problems persist after this time.

How long does flurazepam stay in your system?

Flurazepam is rapidly metabolized within the body, with effects peaking around 30-60 minutes after dosing.

The half-life (the time it takes for the amount of the drug to be reduced by half in the body) of flurazepam is 2.3 hours⁠[3]. It is subsequently excreted through the urine.

Flurazepam side effects

Flurazepam can cause side effects. Inform your doctor if any of the following symptoms persist:

  • Drowsiness
  • Dizziness
  • Blurred vision
  • Nausea
  • Vomiting
  • Upset stomach
  • Diarrhea
  • Constipation
  • Joint pain
  • Weakness
  • Loss of coordination
  • Headache
  • Heartburn
  • Nervousness
  • Irritability
  • Taking more doses than prescribed 

Some adverse effects of Flurazepam are serious and you should seek immediate emergency medical attention if you have any of them. These include:

  • Hives or rashes
  • Swelling in the face, throat, tongue, lips, or eyes
  • Hoarseness
  • Difficulty breathing or swallowing
  • Pounding heartbeat
  • Chest pain
  • Coma (loss of consciousness for an extended period of time)⁠[2].

Flurazepam precautions

Serious allergic reactions, although uncommon, can occur with flurazepam. If you know you are allergic to flurazepam, or any other benzodiazepine, inform your doctor immediately. If you are unsure, ask your doctor for a list of ingredients and check if you are allergic to any of them⁠[2].

You should also inform your doctor if you are taking any other prescription or non-prescription medications including (but not limited to) vitamins, nutritional supplements, antihistamines, anti-anxiety or anti-depression medicines, muscle relaxants, sedatives, other sleeping pills etc. 

You must also inform your doctor if you have ever had sleep apnea (sleep disorder that can stop breathing for periods of time during sleep) or lung, kidney, or liver disease. 

If you are or plan on becoming pregnant, or are breastfeeding, you must also inform your doctor. Should you become pregnant whilst on flurazepam, stop taking it immediately and inform your doctor.

If you are above the age of 65, you should consult with your doctor before taking flurazepam. This is because there are safer medications used to treat this condition in elderly patients.

Before having any kind of surgery, including dental surgery, please inform the doctor or dentist that you are taking flurazepam.

This medication can cause drowsiness. Please bear this in mind if you get out of bed in the middle of the night. Please also refrain from driving a car or operating heavy machinery until you are sure of how this medicine affects you⁠[2]. 

Flurazepam, like other benzodiazepines, can be highly addictive. If you have a history of substance use disorders, either prescription or illegal, you should avoid flurazepam completely or talk to your doctor before taking it.

Subject matter expert

\"\"

Leila Khurshid, Pharm.D.

Clinical pharmacy and medication

Flurazepam interactions

When taking flurazepam, you should generally limit or avoid drinking alcoholic beverages. This is because alcohol can exacerbate some common side effects of flurazepam, such as dizziness and drowsiness.

If you are taking sodium oxybate (which is used as daytime sleepiness), you should avoid flurazepam, as it increases the CNS-depressant activities of sodium oxybate.

Flurazepam storage

Flurazepam should be stored at room temperature, away from heat and moisture (i.e., not in the bathroom), and kept out of the reach of children.

What to do if you overdose on flurazepam

In case of severe drowsiness, confusion, or periods of unconsciousness, this could indicate an overdose on flurazepam. In this case, please call the poison control helpline on 1-800-222-1222.

If someone taking flurazepam collapses, has a seizure, has trouble breathing, or cannot be awakened, call 911 immediately⁠[2].

FAQ

Are there any alternatives to flurazepam?

There are risks associated with taking benzodiazepines like flurazepam, such as adverse reactions and physical dependence, so consider taking over-the-counter sleep aids instead. These can include:

  • Melatonin: a hormone that helps regulate the sleep cycle
  • Valerian: a plant-based supplement that can reportedly help with sleep patterns
  • Doxylamine (Unisom): a sedating antihistamine. Side effects can include daytime drowsiness, dry mouth and urinary retention.
  • Diphenhydramine (Benadryl): also a sedating antihistamine. Can cause side effects similar to those of Doxylamine.

References

  1. de Paula, A.J.M. (1980). Flurazepam in insomnia. In Priest, R.G. Filho, U.V. Amrein, R. Skreta, M. (Eds.) Benzodiazepines. Springer, Dordrecht. Springer. Accessed October 10 2026.
  2. MedlinePlus [Internet]. (2021 May 15; cited 2022 Oct 26). Bethesda (MD): National Library of Medicine (US); Flurazepam. MedlinePlus. Accessed October 10 2026.
  3. Griffin CE 3rd, Kaye AM, Bueno FR, Kaye AD. (2013). Benzodiazepine pharmacology and central nervous system-mediated effects. Ochsner J. 2013 Summer;13(2):214-23. PMID: 23789008; PMCID: PMC3684331. National Library of Medicine. Accessed October 10 2026.

Medical Content

The Clinical Affairs Team at MentalHealth.com is a dedicated group of medical professionals with diverse and extensive clinical experience. They actively contribute to the development of content, products, and services, and meticulously review all medical material before publication to ensure accuracy and alignment with current research and conversations in mental health. For more information, please visit the Editorial Policy.

About MentalHealth.com

MentalHealth.com helps people understand themselves, build healthier relationships, and access the right care. We bring together mental health education, diagnostics, and care management to support well-being throughout every phase of life.

\"\"

Author

Jenni Jacobsen, Ph.D.

Ph.D., LSW, MSW

Jenni Jacobsen, Ph.D. is a licensed social worker, behavioral health consultant and medical reviewer. She holds a Ph.D. in clinical psychology.

Published
Updated
\"\"

Medical Reviewer

Amy Shelby, M.S.

M.S. Counseling Psychology

Amy Shelby is a medical reviewer with a B.A. in Psychology from Northwestern and an M.S. in Psychology from Chatham University.

Reviewed
\"\"

Related community

Medications

Explore questions and perspectives about psychiatric medications and the treatment experience.

","text":"Home Library Medications Flurazepam (Dalmane) Flurazepam (Dalmane) Written by Jenni Jacobsen, Ph.D.Medically reviewed by Amy Shelby Published on November 22, 2022 · Updated on September 17, 2025 Flurazepam, often sold under the brand name Dalmane, is a benzodiazepine that is used to treat insomnia. Like other benzodiazepines, flurazepam works by slowing down the nervous system. Key takeaways Flurazepam is a benzodiazepine prescribed for insomnia that slows activity in the central nervous system. Drowsiness, dizziness, and impaired alertness can occur, and its effects may persist beyond the night of use. Physical dependence and interactions with alcohol or other sedating substances are important treatment risks. Flurazepam brand names The most common brand names associated with flurazepam are Dalmane and Dalmadorm. What is flurazepam prescribed for? Flurazepam is usually prescribed for the treatment of insomnia (trouble sleeping). It belongs to a class of medicines called benzodiazepines, which also includes diazepam (Valium) and alprazolam (Xanax). How does flurazepam work? Flurazepam works by slowing activity in the brain. Like all benzodiazepines, it affects specific benzodiazepine receptors in the central nervous system⁠[1]. This in turn makes it easier to fall asleep. How is flurazepam usually taken? Flurazepam usually comes in tablets or capsules and is taken by mouth. As it is used to treat insomnia, it should be taken just before bedtime. The prescription label will indicate exactly what dosage should be taken. If you do not understand the instructions, please consult your doctor. The typical dose of flurazepam is 15 mg or 30 mg. Do not take a double dose if you miss one. Your sleep problems should have improved after seven to 10 days from the first dose⁠[2]. Inform your doctor if sleep problems persist after this time. How long does flurazepam stay in your system? Flurazepam is rapidly metabolized within the body, with effects peaking around 30-60 minutes after dosing. The half-life (the time it takes for the amount of the drug to be reduced by half in the body) of flurazepam is 2.3 hours⁠[3]. It is subsequently excreted through the urine. Flurazepam side effects Flurazepam can cause side effects. Inform your doctor if any of the following symptoms persist: Drowsiness Dizziness Blurred vision Nausea Vomiting Upset stomach Diarrhea Constipation Joint pain Weakness Loss of coordination Headache Heartburn Nervousness Irritability Taking more doses than prescribed Some adverse effects of Flurazepam are serious and you should seek immediate emergency medical attention if you have any of them. These include: Hives or rashes Swelling in the face, throat, tongue, lips, or eyes Hoarseness Difficulty breathing or swallowing Pounding heartbeat Chest pain Coma (loss of consciousness for an extended period of time)⁠[2]. Flurazepam precautions Serious allergic reactions, although uncommon, can occur with flurazepam. If you know you are allergic to flurazepam, or any other benzodiazepine, inform your doctor immediately. If you are unsure, ask your doctor for a list of ingredients and check if you are allergic to any of them⁠[2]. You should also inform your doctor if you are taking any other prescription or non-prescription medications including (but not limited to) vitamins, nutritional supplements, antihistamines, anti-anxiety or anti-depression medicines, muscle relaxants, sedatives, other sleeping pills etc. You must also inform your doctor if you have ever had sleep apnea (sleep disorder that can stop breathing for periods of time during sleep) or lung, kidney, or liver disease. If you are or plan on becoming pregnant, or are breastfeeding, you must also inform your doctor. Should you become pregnant whilst on flurazepam, stop taking it immediately and inform your doctor. If you are above the age of 65, you should consult with your doctor before taking flurazepam. This is because there are safer medications used to treat this condition in elderly patients. Before having any kind of surgery, including dental surgery, please inform the doctor or dentist that you are taking flurazepam. This medication can cause drowsiness. Please bear this in mind if you get out of bed in the middle of the night. Please also refrain from driving a car or operating heavy machinery until you are sure of how this medicine affects you⁠[2]. Flurazepam, like other benzodiazepines, can be highly addictive. If you have a history of substance use disorders, either prescription or illegal, you should avoid flurazepam completely or talk to your doctor before taking it. Subject matter expert Leila Khurshid, Pharm.D. Clinical pharmacy and medication Flurazepam interactions When taking flurazepam, you should generally limit or avoid drinking alcoholic beverages. This is because alcohol can exacerbate some common side effects of flurazepam, such as dizziness and drowsiness. If you are taking sodium oxybate (which is used as daytime sleepiness), you should avoid flurazepam, as it increases the CNS-depressant activities of sodium oxybate. Flurazepam storage Flurazepam should be stored at room temperature, away from heat and moisture (i.e., not in the bathroom), and kept out of the reach of children. What to do if you overdose on flurazepam In case of severe drowsiness, confusion, or periods of unconsciousness, this could indicate an overdose on flurazepam. In this case, please call the poison control helpline on 1-800-222-1222. If someone taking flurazepam collapses, has a seizure, has trouble breathing, or cannot be awakened, call 911 immediately⁠[2]. FAQ Are there any alternatives to flurazepam? There are risks associated with taking benzodiazepines like flurazepam, such as adverse reactions and physical dependence, so consider taking over-the-counter sleep aids instead. These can include: Melatonin: a hormone that helps regulate the sleep cycle Valerian: a plant-based supplement that can reportedly help with sleep patterns Doxylamine (Unisom): a sedating antihistamine. Side effects can include daytime drowsiness, dry mouth and urinary retention. Diphenhydramine (Benadryl): also a sedating antihistamine. Can cause side effects similar to those of Doxylamine. References de Paula, A.J.M. (1980). Flurazepam in insomnia. In Priest, R.G. Filho, U.V. Amrein, R. Skreta, M. (Eds.) Benzodiazepines. Springer, Dordrecht. Springer. Accessed October 10 2026. MedlinePlus [Internet]. (2021 May 15; cited 2022 Oct 26). Bethesda (MD): National Library of Medicine (US); Flurazepam. MedlinePlus. Accessed October 10 2026. Griffin CE 3rd, Kaye AM, Bueno FR, Kaye AD. (2013). Benzodiazepine pharmacology and central nervous system-mediated effects. Ochsner J. 2013 Summer;13(2):214-23. PMID: 23789008; PMCID: PMC3684331. National Library of Medicine. Accessed October 10 2026. Medical Content The Clinical Affairs Team at MentalHealth.com is a dedicated group of medical professionals with diverse and extensive clinical experience. They actively contribute to the development of content, products, and services, and meticulously review all medical material before publication to ensure accuracy and alignment with current research and conversations in mental health. For more information, please visit the Editorial Policy. About MentalHealth.com MentalHealth.com helps people understand themselves, build healthier relationships, and access the right care. We bring together mental health education, diagnostics, and care management to support well-being throughout every phase of life. Author Jenni Jacobsen, Ph.D. Ph.D., LSW, MSW Jenni Jacobsen, Ph.D. is a licensed social worker, behavioral health consultant and medical reviewer. She holds a Ph.D. in clinical psychology. Published November 22, 2022 Updated September 17, 2025 Medical Reviewer Amy Shelby, M.S. M.S. Counseling Psychology Amy Shelby is a medical reviewer with a B.A. in Psychology from Northwestern and an M.S. in Psychology from Chatham University. Reviewed November 23, 2022 Related community Medications Explore questions and perspectives about psychiatric medications and the treatment experience. Table of contentsChoose a section Flurazepam brand names What is flurazepam prescribed for? How does flurazepam work? How is flurazepam usually taken? How long does flurazepam stay in your system? Flurazepam side effects Flurazepam precautions Flurazepam interactions Flurazepam storage What to do if you overdose on flurazepam FAQ View more","wordCount":1252},"schema":{"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://www.mentalhealth.com/#organization","name":"MentalHealth.com","url":"https://www.mentalhealth.com/","publishingPrinciples":"https://www.mentalhealth.com/publishing/editorial-policy"},{"@type":"WebSite","@id":"https://www.mentalhealth.com/#website","url":"https://www.mentalhealth.com/","name":"MentalHealth.com","inLanguage":"en-US","publisher":{"@id":"https://www.mentalhealth.com/#organization"}},{"@type":"BreadcrumbList","@id":"https://www.mentalhealth.com/library/flurazepam-dalmane-uses-dosage-side-effects#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.mentalhealth.com/"},{"@type":"ListItem","position":2,"name":"Library","item":"https://www.mentalhealth.com/library"},{"@type":"ListItem","position":3,"name":"Medications","item":"https://www.mentalhealth.com/library/medications"},{"@type":"ListItem","position":4,"name":"Flurazepam (Dalmane)","item":"https://www.mentalhealth.com/library/flurazepam-dalmane-uses-dosage-side-effects"}]},{"@type":"ImageObject","@id":"https://www.mentalhealth.com/library/flurazepam-dalmane-uses-dosage-side-effects#primaryimage","url":"https://www.mentalhealth.com/assets/optimized/393dd8888995ef4d451a5192.webp","contentUrl":"https://www.mentalhealth.com/assets/optimized/393dd8888995ef4d451a5192.webp","width":1200,"height":675,"encodingFormat":"image/webp","caption":"One person gently holds another person's clasped hands."},{"@type":"Person","@id":"https://www.mentalhealth.com/people/jenni-jacobsen#person","name":"Jenni Jacobsen, Ph.D.","url":"https://www.mentalhealth.com/people/jenni-jacobsen","jobTitle":"Ph.D., LSW, MSW","image":"https://www.mentalhealth.com/assets/optimized/4f4e4293be2246dfe2e00d7c.jpg","memberOf":[{"@id":"https://www.mentalhealth.com/clinical-affairs#department"},{"@id":"https://www.mentalhealth.com/publishing#department"}]},{"@type":"Person","@id":"https://www.mentalhealth.com/people/amy-shelby#person","name":"Amy Shelby","url":"https://www.mentalhealth.com/people/amy-shelby","jobTitle":"M.S. 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