If you will be taking dantrolene for a long time - for example, for few months at a time, your family doctor must check your progress at regular appointments. It may be necessary to have certain blood tests to check for unwanted effects while you are taking dantrolene.
This drug will add to the effects of alcohol and other CNS depressants - medication that slow down the nervous system, possibly causing drowsiness. Some examples of CNS depressants are antihistamines or drug for hay fever, other allergies, or colds; sedatives, tranquilizers, or sleeping drug; prescription pain drug or narcotics; barbiturates; drug for seizures; other muscle relaxants; or anesthetics, including some dental anesthetics. Therefore, do not drink alcoholic beverages and check with your family doctor before taking any of the medication listed above, while you are using this drug .
This drug may cause drowsiness, dizziness or lightheadedness, vision problems, or muscle weakness in some people Make sure you know how you react to this drug before you drive, use machines, or do anything else that could be dangerous if you are dizzy or are not alert, well-coordinated and able to see well .