Best treatments for muscle spasticity
15 products may treat muscle spasticity, spanning FDA drug classes such as muscle relaxant, benzodiazepine, skeletal muscle relaxant. The current highest-rated option is metaxalone. Ranked below by our independent recall-safety rating (rated where FDA data exists) — not medical advice; always consult a professional.
Quick answer: Of the 15 drugs we list for muscle spasticity, all are available as lower-cost generics, spanning classes such as muscle relaxant, benzodiazepine, skeletal muscle relaxant. They’re ranked by each drug’s FDA recall-safety record — not clinical effectiveness for muscle spasticity — so confirm the right choice with your prescriber.
Understanding muscle spasticity
"Muscle spasticity" is not a disease in itself — it is a symptom of damage to the nerve pathways that normally restrain muscle tone. MedlinePlus (NLM) describes spasticity as stiff or rigid muscles, also called unusual tightness or increased muscle tone, and lists causes including stroke, cerebral palsy, multiple sclerosis, spinal cord injury, head injury, and brain damage caused by lack of oxygen. So this category covers people who arrived from very different diagnoses with the same motor problem. The definition doctors use is narrower than "tight muscles." StatPearls (NCBI Bookshelf) defines spasticity as a motor disorder characterized by a velocity-dependent increase in muscle tone or tonic stretch reflexes associated with hypertonia — resistance grows the faster a limb is moved. That is what separates it from a fixed contracture, which StatPearls says does not exhibit velocity-dependent changes with movement or limb positioning, and from rigidity, which it describes as unaffected by movement speed and constant throughout the range of motion. Clinicians grade it with the Modified Ashworth Scale, which runs from 0 (no increase in tone) to 4 (rigid in flexion or extension), with an additional 1+ grade between 1 and 2. Per StatPearls, spasticity is common after neurological injury: approximately 35% after stroke, about 50% after traumatic brain injury, 40% after spinal cord injury, between 37% and 78% in multiple sclerosis, and more than 90% in cerebral palsy. StatPearls also names triggers that commonly worsen it: skin lesions such as ulcers, ingrown toenails and boils; visceral issues including constipation, urinary tract infections and calculi; drug-related causes such as rapid withdrawal of antispasmodic agents; and device-related factors. Identifying and avoiding those triggers sits at the conservative end of the treatment ladder, before the more invasive steps. This is general information, not medical advice.
First-line treatment
The counterintuitive first step is deciding whether to treat at all. StatPearls (NCBI Bookshelf) states that prior to initiating treatment, clinicians must determine whether the patient's spasticity warrants intervention — overtreatment may interfere with activities of daily living, increase fall risk, and adversely affect the patient's therapy program, and in select cases increased tone may itself facilitate weight-bearing or ambulation. Where treatment is warranted, StatPearls describes a stepwise approach beginning with conservative measures and progressing to more invasive procedures as needed: physical modalities such as stretching, splinting, serial casting and functional electrical stimulation; oral agents (it names baclofen, tizanidine, dantrolene and diazepam among the FDA-approved options); botulinum toxin injections and nerve blocks; and intrathecal baclofen or surgery in refractory cases. The 2016 American Academy of Neurology guideline update names specific injectables: for upper-limb spasticity, abobotulinumtoxinA, incobotulinumtoxinA and onabotulinumtoxinA are effective in reducing excess muscle tone and should be offered, while rimabotulinumtoxinB is probably effective and should be considered; for lower-limb spasticity, abobotulinumtoxinA and onabotulinumtoxinA are effective and should be offered. Dosing and drug choice are decisions for a treating clinician.
Top-rated picks for muscle spasticity: 1. Metaxalone · 2. Diazepam · 3. Amrix
| # | Drug | Rating | Type | Form | Class | Generic? | Pharmacy pays | |
|---|---|---|---|---|---|---|---|---|
| 1 | 70/100 | Prescription | Tablet | Muscle Relaxant | Generic | $12 | View → | |
| 2 | 68/100 | Prescription | Injectable | Benzodiazepine | Generic | $1 | View → | |
| 3 | 56/100 | Prescription | Capsule | Muscle Relaxant | Generic | $1 | View → | |
| 4 | Not yet rated | Prescription | Tablet | Muscle Relaxant | Generic | $2 | View → | |
| 5 | Not yet rated | Prescription | Capsule | Skeletal Muscle Relaxant | Generic | $14 | View → | |
| 6 | Not yet rated | Prescription | Topical | Benzodiazepine | Generic | $1 | View → | |
| 7 | Not yet rated | Prescription | Topical | Benzodiazepine | Generic | $1 | View → | |
| 8 | Not yet rated | Prescription | Injectable | gamma-Aminobutyric Acid-ergic Agonist | Generic | $2 | View → | |
| 9 | Not yet rated | Prescription | Solution | Central alpha-2 Adrenergic Agonist | Generic | $1 | View → | |
| 10 | Not yet rated | Prescription | Solution | gamma-Aminobutyric Acid-ergic Agonist | Generic | $2 | View → |
Narrow by drug class
Explore the class hubs: muscle relaxant · benzodiazepine · gamma-aminobutyric acid-ergic agonist · central alpha-2 adrenergic agonist
Full ranking · 15 treatments
metaxalone
PrescriptionFDA-sourced
Metaxalone is a muscle relaxant used to treat Muscle Cramp, Muscle Rigidity, Muscle Spasticity, Myositis.
Pharmacy pays
From ~$11.87/30· 2 forms Save up to 95% in classdiazepam
Boxed warningPrescriptionFDA-sourced
Diazepam is a benzodiazepine used to treat Alcohol Withdrawal Delirium, Muscle Spasticity, Status Epilepticus, Panic Disorder.
Pharmacy pays
From ~$0.65/30· 8 forms Save up to 14% in classamrix
PrescriptionFDA-sourced
Amrix (Cyclobenzaprine Hydrochloride) is a muscle relaxant used to treat Muscle Cramp, Muscle Rigidity, Muscle Spasticity, Myositis.
Pharmacy pays
From ~$0.53/30· 5 formscarisoprodol
PrescriptionFDA-sourced
Carisoprodol is a muscle relaxant used to treat Muscle Cramp, Muscle Rigidity, Muscle Spasticity, Myositis.
Pharmacy pays
From ~$1.98/30· 2 forms Save up to 69% in classdantrium
PrescriptionFDA-sourced
Dantrium (Dantrolene Sodium) is a skeletal muscle relaxant used to treat Cerebral Infarction, Cerebral Palsy, Malignant Hyperthermia, Multiple Sclerosis.
Pharmacy pays
From ~$12.68/30· 3 formsdiastat
Boxed warningPrescriptionFDA-sourced
Diastat (Diazepam) is a benzodiazepine used to treat Alcohol Withdrawal Delirium, Muscle Spasticity, Status Epilepticus, Panic Disorder.
Pharmacy pays
From ~$0.65/30· 8 forms Save up to 14% in classFrequently asked
- What treats muscle spasticity?
- Our catalog lists 15 products that may treat muscle spasticity, based on NIH RxClass (MED-RT “may treat”) drug-classification data — not the verbatim FDA label. They're rated where FDA recall-safety data exists; the current top-rated option is metaxalone.
- What is the best-rated treatment for muscle spasticity?
- By our independent recall-safety rating — not an efficacy measure — metaxalone ranks highest among the products we list for muscle spasticity. Always consult a professional.
- How are these treatments ranked?
- By our independent score, currently based on FDA regulatory recall-safety data (the methodology blends additional sources as they come online). See the How we rate page.
- What types of drugs treat muscle spasticity?
- Treatments for muscle spasticity span FDA drug classes including muscle relaxant, benzodiazepine, skeletal muscle relaxant, gamma-aminobutyric acid-ergic agonist, central alpha-2 adrenergic agonist. Compare every option side by side, ranked by independent rating, above.
Treatment associations are derived from NIH RxClass (MED-RT “may treat”) drug-classification data — not the verbatim FDA label. This is general reference, not medical advice — always consult a licensed professional.
Sources
The clinical overview above is written from these authoritative public-health and medical-society sources, independently reviewed against each.