Noctec Side Effects Center

Last updated on RxList: 8/12/2020
Noctec Side Effects Center

What Is Noctec?

Noctec (chloral hydrate) is a hypnotic used to treat insomnia and to calm patients before surgery or other procedures.

What Are Side Effects of Noctec?

Common side effects of Noctec include drowsiness, trouble waking up in the morning, nausea, vomiting, stomach pain, diarrhea, and headache. Tell your doctor if you experience serious side effects of Noctec including:

  • slow or shallow breathing
  • mental/mood changes (such as confusion, thinking that others wish to harm you)
  • sleepwalking
  • staggering walk
  • loss of balance
  • severe dizziness
  • fainting
  • stomach problems (gastritis) or
  • kidney problems
  • vomit that looks like coffee grounds
  • difficult or painful swallowing
  • black/tarry stools
  • severe stomach or
  • abdominal pain, and
  • changes in the amount of urine

Additional Information

Our Noctec (chloral hydrate) Side Effects Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

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.


Digestive Disorders: Common Misconceptions See Slideshow
Noctec Professional Information

3 pharmacies near 23917 have coupons for noctec (Brand Names:Noctec for 25GM of )


Est. Regular Price


with free coupon

View Coupon
CVS Pharmacy
CVS Pharmacy

Est. Regular Price


with free coupon

View Coupon
Walmart Pharmacy
Walmart Pharmacy

Est. Regular Price


with free coupon

View Coupon


Central Nervous System

Occasionally a patient becomes somnambulistic and he may be disoriented and incoherent and show paranoid behavior. Rarely, excitement, tolerance, addiction, delirium, drowsiness, staggering gait, ataxia, lightheadedness, vertigo, dizziness, nightmares, malaise, mental confusion and hallucinations have been reported.


Leukopenia and eosinophilia have occasionally occurred.


Allergic skin rashes including hives, erythema, eczematoid dermatitis, urticaria, and scarlatiniform exanthems have occasionally been reported.


Some patients experience gastric irritation and occasionally nausea and vomiting, flatulence, diarrhea, and unpleasant taste occur.


Rarely, headache, hangover, idiosyncratic syndrome, and ketonuria have been reported.


Controlled Substance

Drug Enforcement Administration Schedule IV.


Chloral hydrate may be habit- forming. Patients known to be addiction- prone and patients who actively solicit hypnotics in increasing doses are potential addicts. Many patients take higher doses of hypnotics than they admit, and slurring of speech, incoordination, tremulousness, and nystagmus should arouse suspicion. Drowsiness, lethargy, and hangover are frequently observed from excessive drug intake.


Prolonged use of larger than usual therapeutic doses may result in psychic and physical dependence. Tolerance and psychologic dependence may develop by the second week of continued administration.

Chloral hydrate addicts may take huge doses of the drug (i.e., up to 12 g nightly has been reported). This abuse is similar to alcohol addiction and sudden withdrawal may result in central nervous excitation, with tremor, anxiety, hallucination, or even delirium which may be fatal. In patients suffering from chronic chloral hydrate intoxication, gastritis is common and skin eruptions may develop. Parenchymatous renal injury may also occur. Withdrawal should be undertaken in a hospital and supportive treatment similar to that used during barbiturate withdrawal is recommended.

Read the entire FDA prescribing information for Noctec (Chloral Hydrate)


About how much does an adult human brain weigh? See Answer

© Noctec Patient Information is supplied by Cerner Multum, Inc. and Noctec Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

Health Solutions From Our Sponsors