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Overdose With Haloperidol

People who take too much of this medication may have overdose symptoms that could include:
  • Muscle weakness or rigid muscles
  • Shakiness (tremors)
  • Low blood pressure (hypotension)
  • Drowsiness
  • Coma
  • Difficulty breathing
  • An irregular heart rhythm (arrhythmia).
If you happen to overdose, seek medical attention immediately.
(Click Haldol Overdose for more information.)

Storage Methods

The medication should be stored at room temperature, away from moisture and heat. Haloperidol tablets and oral solution should be stored in an airtight container.
Keep haloperidol and all other medications out of the reach of children.

What Should I Do If I Miss a Dose?

If you do not take your haloperidol as scheduled, take your missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose.

Who Makes It?

Haloperidol was originally manufactured by Ortho-McNeil Neurologics. While brand-name injectable haloperidol is still available, brand-name haloperidol tablets and oral liquid are no longer being made. Generic haloperidol is made by several different companies.


Generic haloperidol tablets are available in the following strengths:
  • Haloperidol 0.5 mg
  • Haloperidol 1 mg
  • Haloperidol 2 mg
  • Haloperidol 5 mg
  • Haloperidol 10 mg
  • Haloperidol 20 mg.
Generic haloperidol oral solution is available in one strength -- Haloperidol oral solution 2 mg per mL.
Injectable haloperidol is also available, in short-acting (haloperidol lactate) and long-acting (haloperidol decanoate) forms.
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