Compare Dantrium vs. Sanctura

Head-to-head comparisons of medication uses, side effects, ratings, and more.


Dantrium (dantrolene)

Prescription only

Sanctura (trospium)

Prescription only
Relaxes your muscles.

Dantrium (dantrolene) effectively treats malignant hyperthermia (increased temperature and muscle contractions when receiving anesthesia) and is the only medicine used to treat the condition. Dantrium (dantrolene) is not a first-choice treatment for general muscle spasms because it can damage your liver.

Treats overactive bladder.

Sanctura (trospium) is a good treatment for overactive bladder after exercises when other methods to control it haven't worked.

  • Dantrium (dantrolene) effectively treats malignant hyperthermia.
  • Can be used for muscle spasticity if other medications haven't worked.
  • Available as generic.
  • Sanctura (trospium) is effective at treating overactive bladder.
  • Sanctura (trospium) may be a better choice if you have liver problems.
  • Sanctura (trospium) is available as a generic.
  • Not a first-choice treatment for muscle spasms because it can cause liver damage.
  • Can cause dizziness, sleepiness, and sometimes severe diarrhea.
  • Needs routine blood tests since it can injure your liver.
  • Dose needs to be increased slowly to minimize side effects.
  • You have to take Sanctura (trospium) on an empty stomach.
  • You may need to take Sanctura (trospium) twice a day.
  • Sanctura (trospium) can cause drowsiness, dizziness, and increase your risk for falls.
  • Generally not recommended if you older than 65.
Used for
  • Malignant hyperthermia
  • Chronic spasticity
  • Neuroleptic malignant syndrome
Dosage forms
  • Pill
  • Injection
  • Pill
  • Extended release
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Side effects
The Dantrium (dantrolene) FDA package insert doesn’t have numbers about how common side effects are.
4possible side effects
  • Dry mouth
  • Constipation
  • Dry eyes
  • Gas
See more detailed side effects
Risks and risk factors
  • Liver injury
    • Taking 800 mg or more Dantrium (dantrolene) per day
    • Women
    • Over 35 years old
    • Elderly
    • History of liver disease or dysfunction
  • Drowsiness and dizziness
    • Alcohol or recreational drug use
  • Sun sensitivity
  • Lung disease
    • COPD
    • Heart failure
See more detailed risks and warnings
  • Facial swelling & breathing problems
  • Difficulty concentrating
    • Taking with alcohol
    • Taking other medicines that make you less alert
    • People age 65 or older
  • Vision changes
    • Glaucoma
  • Urinary retention
    • Bladder outflow obstruction
  • Increased side effects
    • History of kidney problems
    • People age 65 or older
  • Heat exhaustion
    • Outside in hot weather
    • Dehydrated
    • Exercising
    • People age 65 and older
See more detailed risks and warnings