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Virtually any disease as well as most injuries and surgical procedures involve some degree of pain. It's not surprising, then, that pain medications, also known as analgesics, are among the most commonly used drugs in the U.S. Pain can range from minor, acute complaints, such as a muscle sprain, to chronic, severe pain, such as that sometimes experienced by cancer patients. Some drugs used for other conditions also are effective at relieving certain types of pain. These drugs include certain drugs used for depression, epilepsy, and anxiety.
Pain medications can be broadly classified into two categories: prescription and nonprescription. In the latter category are several mild anti-inflammatory drugs (ibuprofen, naproxen), as well as acetaminophen. These are mainly meant for use with short-term, acute pain -- menstrual cramps,...
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Dantrolene is a muscle relaxant.
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 muscle stiffness and spasms caused by malignant hyperthermia (a rapid rise in body temperature) that can occur during surgery with certain types of anesthesia.
Dantrolene may also be used for other purposes not listed in this medication guide.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
Less serious side effects may include:
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
You should not take this medication if you are allergic to dantrolene, or if you have liver disease such as hepatitis or cirrhosis.
You may be more likely to develop liver problems while taking dantrolene if you are a woman, or if you are older than 35. Talk with your doctor about your individual risk.
Do not use dantrolene at a time when muscle tone is needed to assure safe balance and movement for certain activities. In some situations, it may endanger your physical safety to be in a state of reduced muscle tone.
Before taking dantrolene, tell your doctor if you have a history of liver disease, a breathing disorder such as COPD, heart disease, or a history of heart attack.
Dantrolene can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.
Dantrolene can cause muscle weakness, which can affect your ability to swallow. Use caution to prevent choking while you are eating meals. Talk with your doctor if you are unable to eat because of this side effect.
Avoid drinking alcohol. It can increase some of the side effects of dantrolene.
Your doctor may occasionally change your dose to make sure you get the best results from this medication.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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