If you will be using this medicine regularly for a long time:
- Your doctor should check your progress at regular visits to make sure that this medicine does not cause unwanted effects.
- Do not stop using it without first checking with your doctor. Your doctor may want you to reduce gradually the amount you are using before stopping completely.
This medicine will add to the effects of alcohol and other CNS depressants (medicines that slow down the nervous system, possibly causing drowsiness). Some examples of CNS depressants are antihistamines or medicine for hay fever, other allergies, or colds; sedatives, tranquilizers, or sleeping medicine; prescription pain medicine or narcotics; barbiturates; medicine for seizures; muscle relaxants; or anesthetics, including some dental anesthetics. Check with your doctor before taking any of the above while you are using this medicine.
If you think you or someone else may have taken an overdose of this medicine, get emergency help at once. Taking an overdose of chloral hydrate or taking alcohol or other CNS depressants with chloral hydrate may lead to unconsciousness and possibly death. Some signs of an overdose are continuing confusion, difficulty in swallowing, convulsions (seizures), severe drowsiness, severe weakness, shortness of breath or troubled breathing, staggering, and slow or irregular heartbeat.
This medicine may cause some people to become dizzy, lightheaded, drowsy, or less alert than they are normally. Even if taken at bedtime, it may cause some people to feel drowsy or less alert on arising. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or are not alert .