Medication class
Muscle Relaxants
Skeletal muscle relaxants for muscle spasms, back pain, and musculoskeletal conditions.
Data updated 2026-05-15
- 10
- Medications
- 9
- With a generic
- 94%
- Avg generic savings
- 0
- In active shortage
Drug class assignments follow the FDA openFDA therapeutic classification, clinical details are drawn from FDA Structured Product Labeling via DailyMed, and unit-price comparisons use CMS National Average Drug Acquisition Cost data. See the full sources below.
Inventory versus report volume
Muscle Relaxants is inventory #19 of 22 (largest of 2 at 10 drugs) ≠ FAERS-volume #21. Nationally Mental Health is inventory #1 of 22 (77 drugs) ≠ Pain Relief FAERS-volume #1 at inventory #3.
- #19
- inventory
- 10
- tracked drugs
- #21
- FAERS volume
- #1
- Pain Relief FAERS nationally
According to FDA FAERS report totals and openFDA class inventory compiled on /methodology. Class size is not the same map as report volume. This page is for informational purposes only and is not medical advice.
This class - generic availability cut
Exclusive DISTINCT-drug split of 10 medicines in Muscle Relaxants. Orthogonal to inventory vs FAERS dual and to the NADAC cost ChartBar.
carisoprodol tops Muscle Relaxants NADAC at $10.00/unit
Top 9 acquisition costs in this class (CMS NADAC)
- carisoprodol
carisoprodol
$10 per unit
- orphenadrine
orphenadrine
$6 per unit
- metaxalone $3
metaxalone
$3 per unit
- dantrolene $1
dantrolene
$1 per unit
- chlorzoxazone $0
chlorzoxazone
$0 per unit
- tizanidine $0
tizanidine
$0 per unit
- baclofen $0
baclofen
$0 per unit
- methocarbamol $0
methocarbamol
$0 per unit
- cyclobenzaprine $0
cyclobenzaprine
$0 per unit
What this shows carisoprodol is the costliest in this class at $10.00/unit; generics in the same class run a fraction of that.
Muscle Relaxants · #20 inventory of 22 therapeutic classes
2 classes have fewer tracked drugs; percentile 9 among PlainMeds categories.
Muscle Relaxants vs all classes by tracked-drug count
Where this class's inventory sits among every PlainMeds therapeutic category
10 20th of 22 higher than 2 of 22 classes
Classes, banded by tracked-drug inventory
Each bar is a band; taller bars hold more classes. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source PlainMeds openFDA therapeutic-class inventory · 2026-05-15
Muscle Relaxants · top generic-availability (#3 of 22 at 90%)
90% of muscle relaxants medications have a generic available, ranking #3 of 22 therapeutic classes (the typical class sits near 74%).
Source: CMS NADAC generic-availability flags across all PlainMeds therapeutic classes. The dot is this class; the line is the cross-class median.
baclofen
Lioresal, Gablofen
Baclofen is a muscle relaxant.
View details →
botulinum toxin A
Botox
Botox is a drug that blocks nerve signals to muscles.
View details →
carisoprodol
Soma
Carisoprodol is a muscle relaxant.
View details →
chlorzoxazone
Parafon Forte
Chlorzoxazone is a muscle relaxant.
View details →
cyclobenzaprine
Flexeril, Amrix
Cyclobenzaprine is a muscle relaxant.
View details →
dantrolene
Dantrium
Dantrolene is a muscle relaxant.
View details →
metaxalone
Skelaxin
Metaxalone is a muscle relaxant.
View details →
methocarbamol
Robaxin
Methocarbamol is a muscle relaxant.
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orphenadrine
Norflex
Orphenadrine (Norflex) is a muscle relaxant that can help relieve discomfort from painful muscle problems.
View details →
tizanidine
Zanaflex
Tizanidine is a muscle relaxant.
View details →
Muscle Relaxants · top generic-availability class (#3 of 22)
Muscle Relaxants is inventory #19 of 22 (largest of 2 at 10 drugs) ≠ FAERS-volume #21. Nationally Mental Health is inventory #1 of 22 (77 drugs) ≠ Pain Relief FAERS-volume #1 at inventory #3. 10 medicines tracked; 9 carry a NADAC generic flag.
Classes nearest Muscle Relaxants by inventory size
Read our methodology - how this data is sourced, computed, and verified.