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What happens if I miss a dose (Dantrium)?

Take the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose (Dantrium)?

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms may include vomiting, diarrhea, and extreme drowsiness or muscle weakness.

What should I avoid while taking dantrolene (Dantrium)?

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.

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.

Avoid drinking alcohol. It can increase some of the side effects of dantrolene.

Avoid exposure to sunlight, sunlamps, or tanning beds. Dantrolene can make your skin more sensitive to sunlight, and a sunburn may result. Wear protective clothing and use sunscreen (SPF 15 or higher) when you are outdoors.

What other drugs will affect dantrolene (Dantrium)?

Cold or allergy medicine, sedatives, narcotic pain medicine, sleeping pills, and medicine for seizures, depression or anxiety can add to sleepiness caused by dantrolene. Tell your doctor if you regularly use any of these medicines, or any other muscle relaxers.

Tell your doctor about all other medications you use, especially:

• birth control pills and other hormones; or
• a heart or blood pressure medication such as amlodipine (Norvasc), diltiazem (Tiazac, Cartia, Cardizem), felodipine (Plendil), nicardipine (Cardene), nifedipine (Procardia, Adalat), nimodipine (Nimotop), nisoldipine (Sular), or verapamil (Calan, Covera, Isoptin, Verelan).

This list is not complete and there may be other drugs that can interact with dantrolene. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about dantrolene.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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