Generic name: Clonazepam.

Klonopin is a benzodiazepine anticonvulsant. It selectively reduces overstimulation in the brain. 

Quick Facts About Klonopin


Used to treat epilepsy and other convulsive disorders. Also used to treat panic disorder.

Klonopin Dosage

Take exactly as prescribed; is important to keep a constant amount in the bloodstream for maximum effectiveness. Consult with your doctor before discontinuing or changing doses.

  • Usual adult dose: 1.5 milligrams per day divided into 3 doses. Doctor may increase in increments of 0.5 to 1 milligram every 3 days until seizures are controlled, or side effects increase. One to 2 milligrams per day for panic disorder. Maximum dose is 20 milligrams per day. Also comes in water form.
  • Usual child dose (for children 10 years and older and up to 66 pounds): 0.01 to 0.03 milligram per 2.2 pounds of body weight per day, up to 0.05 milligram per 2.2 pounds of body weight. Doctor may increase in increments of 0.25 to 0.5 milligram every 3 days until seizures are controlled or side effects increase. If doses cannot be divided into 3 equal doses, take largest dose at bedtime. Maintenance dose — 0.1 to 0.2 milligram per 2.2 pounds of body weight per day.
  • Missed dose: if within 1 hour after missed time — take as soon as possible. Otherwise, do not take missed dose; go back to regular schedule. Do not double doses.

Klonopin Side Effects

Overdose symptoms:

coma, confusion, sleepiness, slowed reaction time. If you suspect an overdose, immediately seek medical attention.

More common side effects: behavior problems, drowsiness, lack of muscular coordination.

Less common or rare Klonopin side effects: abnormal eye movements, anemia, bedwetting, chest congestion, coated tongue, coma, confusion, constipation, dehydration, depression, diarrhea, double vision, dry mouth, excess hair, fever, fluttery or throbbing heartbeat, “glassy-eyed” appearance, hair loss, headache, hallucinations, inability to fall or stay asleep, inability to urinate, increased sex drive, involuntary rapid movement of the eyeballs, loss of or increased appetite, loss of voice, memory loss, muscle and bone pain, muscle weakness, nausea, nighttime urination, painful or difficult urination, partial paralysis, runny nose, shortness of breath, skin rash, slowed breathing, slurred speech, sore gums, speech difficulties, stomach inflammation, swelling of ankles and face, tremor, uncontrolled body movement or twitching, vertigo, weight loss or gain. Side effects from rapid decrease or abrupt discontinuance of Klonopin: abdominal and muscle cramps, behavior disorders, convulsions, depressed feeling, hallucinations, restlessness, sleeping difficulties, tremors.


Inform your doctor before combining Klonopin with:

anti-anxiety medications (Valium); antidepressants such as Elavil, Nardil, Parnate, and Tofranil; barbiturates such as phenobarbital; major tranquilizers such as Haldol, Navane, and Thorazine; narcotics such as Demerol and Percocet; other anticonvulsants such as Dilantin, Depakene, and Depakote; sedatives (Halcion).

Do not drink alcohol while taking Klonopin; central nervous system is slowed by alcohol and the side effects of Klonopin may be intensified. 

Special Cautions

If pregnant or planning to become pregnant, inform your doctor immediately. Appears in breast milk; could affect a nursing infant.

No special precautions apply to seniors.

Follow doctor’s instructions carefully for children.

  • May cause drowsiness and impair your ability to drive a car or operate machinery. Do not take part in any activity that requires alertness.
  • If sensitive to or allergic to this or similar medications such as Librium and Valium, should not take.
  • If you have glaucoma or severe liver disease, should not take.
  • Monitor for dependency; can be habit-forming. May also build a tolerance, losing effectiveness of medication.
  • If prior to Klonopin therapy you experience seizures, this medication may increase possibility of grand mal seizures.


HealthSurvey.org provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Klonopin side effects, please contact your healthcare provider.