What is Dantrium (dantrolene)?
Dantrolene is a muscle relaxant. It works by directly affecting the ability of your muscles to contract (stiffen).
Dantrolene is used to treat muscle spasticity (stiffness and spasms) caused by conditions such as a spinal cord injury, stroke, cerebral palsy, or multiple sclerosis.
Dantrolene is also used to prevent the development of malignant hyperthermia (a rapid rise in body temperature) and stiff muscles caused by anesthesia during or after surgery.
Although not approved by the FDA for these uses, dantrolene has also been used to treat exercise-induced muscle pain, neuroleptic malignant syndrome, and heat stroke.
Dantrolene may also be used for purposes other than those listed in this medication guide.
How should I take Dantrium (dantrolene)?
Take dantrolene exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.
Take each dose with a full glass of water. Store dantrolene at room temperature away from moisture and heat.
What happens if I overdose?
Seek emergency medical attention.
Symptoms of a dantrolene overdose include muscle weakness, drowsiness, unconsciousness, vomiting, and diarrhea.
What should I avoid while taking Dantrium (dantrolene)?
Use caution when driving, operating machinery, or performing other hazardous activities.
Dantrolene may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities. Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while you are taking dantrolene.
Weakness in grip, leg muscles, and swallowing may occur. Use caution, especially when climbing stairs and eating meals, to prevent falls and choking.
Avoid prolonged exposure to sunlight. Dantrolene may increase the sensitivity of your skin to sunlight. Use a sunscreen and wear protective clothing when exposure to the sun is unavoidable.
Dantrium (dantrolene) side effects
If you experience any of the following serious side effects, stop taking dantrolene and seek emergency medical attention:
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an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
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a rash or itching;
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black, bloody, or tarry stools or severe diarrhea;
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yellow skin or eyes; or
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seizures.
Other, less serious side effects may be more likely to occur. Continue to take dantrolene and talk to your doctor if you experience
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drowsiness, dizziness, weakness or fatigue;
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diarrhea, constipation, upset stomach, or decreased appetite;
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difficulty swallowing (use caution to prevent choking);
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headache or insomnia;
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depression or confusion;
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blurred or abnormal vision; or
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increased urination.
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