Flexeril Dosage

Edmund Murphy
Dr. Kimberly Langdon
Written by Edmund Murphy on 11 January 2022
Medically reviewed by Dr. Kimberly Langdon on 30 October 2024

Flexeril, the brand name for cyclobenzaprine, is a muscle relaxant prescribed for mild to moderate muscle pain relief. For mild muscle pain and spasms, the standard dose of Flexeril prescribed for adults is 5mg, to be taken 3 times a day. More severe cases might be prescribed with 10mg thrice a day. Extended-release cyclobenzaprine may be prescribed in 15 to 30mg doses taken once daily.

Key takeaways:
  • Flexeril is prescribed in different doses depending on the type of muscle pain and how severe it is. Mild symptoms start at 5mg thrice a day and more severe cases are prescribed 10mg thrice daily.
  • While the maximum dose of Cyclobenzaprine is 3 x 10mg daily, it is not advised to take this dose at once, or even 2 x 10mg in one dose. Taking more than the recommended dose at a time may lead to side effects such as headaches and stomach pain.
  • Taking Flexeril in the recommended dosage and for the right length of time should pose little to no risk of dependence or addiction-forming. Cyclobenzaprine abuse and overdose may lead to cardiac arrest, low blood pressure, heart attack, and seizures.

How much Flexeril can you take in one dose?

For mild muscle pain and spasms, the standard dose prescribed is 5mg to be taken a maximum of three times a day. The maximum dose of Flexeril you can take is 10mg three times a day, which is typically prescribed for severe muscle pain. It should not be taken or prescribed for more than 2 to 3 weeks.

Cyclobenzaprine, commonly found under the brand names Flexeril and Amrix, is a muscle-relaxing prescription drug used for mild to moderate muscular and musculoskeletal conditions.

Taking Flexeril in the recommended dosage and for the right length of time should pose little to no risk of dependence or addiction forming. Abusing the drug in higher doses or combining it with other central nervous system depressants like benzodiazepines increases the risk of addiction as well as the potential for overdose.

What is the dose of immediate-release cyclobenzaprine?

The recommended dose of immediate-release cyclobenzaprine is 5 mg three times a day. This dose can be prescribed for adults and young people 15 years of age and older.

What is the dose of extended-release cyclobenzaprine?

An extended-release cyclobenzaprine capsule is taken orally once daily for adults. The prescribed adult dose for the extended-release product is 15 mg taken once daily. For some patients, the doctor may recommend a 30 mg once-daily dose.

Can you take 2 Cyclobenzaprine 10mg at the same time?

While the maximum dose of Cyclobenzaprine is 3 x 10mg daily, it is not advised to take this dose at once, or even 2 x 10mg in one dose.

Overtaking Flexeril, even in the daily recommended dose, can lead to uncomfortable side effects such as dry mouth, headaches, drowsiness, fatigue, and stomach pain.

It also increases the risk of abusing the substance, which may lead to dependence forming.

Can you mix Flexeril with other substances?

In some cases, Flexeril is fine to take alongside other substances. However, there are some drug combinations with Flexeril that may result in negative side effects, some of which can cause severe health conditions. Always speak to a healthcare professional before taking another medication alongside Flexeril.

Flexeril overdose

Another potential side effect of Flexeril abuse is cyclobenzaprine overdose, especially if taken in conjunction with other substances such as other CNS depressants like alcohol. Flexeril causes the body to become relaxed and abusing the substance in high doses can lead to cardiac arrest, low blood pressure, heart attack, and seizures.

Signs someone is having a Flexeril overdose include:

  • Vomiting
  • Slurred speech
  • Rapid heartbeat/irregular heartbeat
  • Hallucinations
  • Difficulty breathing
  • Chest pain
  • Liver damage
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Resources:

  1. How much cyclobenzaprine can I take? Retrieved from on Jan 11, 2022.

Activity History - Last updated: 30 October 2024, Published date:


Reviewer

Kimberly Langdon M.D. has been contributing to medical fields including mental health and addiction since she retired from medicine; with over 19 years of practicing clinical experience.

Activity History - Medically Reviewed on 15 December 2022 and last checked on 30 October 2024

Medically reviewed by
Dr. Kimberly Langdon

M.D.

Dr. Kimberly Langdon

Reviewer

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