Antidyskinetics (Systemic)

Proper Use of This Medicine

Take this medicine only as directed by your doctor . Do not take more of it, do not take it more often, and do not take it for a longer period of time than your doctor ordered. To do so may increase the chance of side effects.

To lessen stomach upset, take this medicine with meals or immediately after meals, unless otherwise directed by your doctor.

Dosing - The dose of antidyskinetics will be different for different patients. Follow your doctor's orders or the directions on the label . The following information includes only the average doses of benztropine, biperiden, ethopropazine, procyclidine, and trihexyphenidyl. If your dose is different, do not change it unless your doctor tells you to do so.

The number of capsules, tablets, or teaspoonfuls of elixir that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are taking antidyskinetics .

For benztropine
• For oral dosage forms (tablets):
  • For Parkinson's disease or certain severe side effects caused by some other medicines:
    • Adults - To start, 0.5 to 4 milligrams (mg) a day, depending on your condition. Your doctor will adjust your dose as needed; however, the dose is usually not more than 6 mg a day.
    • Children - Use and dose must be determined by your doctor.
• For injection dosage form:
  • For Parkinson's disease or certain severe side effects caused by some other medicines:
    • Adults - 1 to 4 mg a day, depending on your condition. Your doctor will adjust your dose as needed; however, the dose is usually not more than 6 mg a day.
    • Children - Use and dose must be determined by your doctor.

For biperiden
• For oral dosage forms (tablets):
  • For Parkinson's disease or certain severe side effects caused by some other medicines:
    • Adults - 2 mg up to four times a day. Your doctor will adjust your dose, depending on your condition; however, the dose is usually not more than 16 mg a day.
    • Children - Use and dose must be determined by your doctor.
• For injection dosage form:
  • For Parkinson's disease or certain severe side effects caused by some other medicines:
    • Adults - 2 mg, injected into a muscle or vein. The dose may be repeated if needed; however, the dose is usually not given more than four times a day.
    • Children - Use and dose is based on body weight and must be determined by your doctor.

For ethopropazine
• For oral dosage forms (tablets):
  • For Parkinson's disease or certain severe side effects caused by some other medicines:
    • Adults - 50 mg one or two times a day. Your doctor will adjust your dose as needed; however, the dose is usually not more than 600 mg a day.
    • Children - Use and dose must be determined by your doctor.

For procyclidine
• For oral dosage forms (elixir or tablets):
  • For Parkinson's disease or certain severe side effects caused by some other medicines:
    • Adults - To start, 2.5 mg three times a day after meals. Your doctor may need to adjust your dose, depending on your condition.
    • Children - Use and dose must be determined by your doctor.

For trihexyphenidyl
• For extended-release oral dosage forms (extended-release capsules):
  • For Parkinson's disease or certain severe side effects caused by some other medicines:
    • Adults - 5 mg after breakfast. Your doctor may add another 5 mg dose to be taken twelve hours later, depending on your condition.
    • Children: Use and dose must be determined by your doctor.
• For other oral dosage forms (elixir or tablets):
  • For Parkinson's disease or certain severe side effects caused by some other medicines:
    • Adults - To start, 1 to 2 mg a day. Your doctor may adjust your dose as needed; however, the dose is usually not more than 15 mg a day.
    • Children - Use and dose must be determined by your doctor.

Missed dose - If you miss a dose of this medicine, take it as soon as possible. However, if it is within 2 hours of your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage - To store this medicine:

• Keep out of the reach of children.
• Store away from heat and direct light.
• Do not store the capsule or tablet form of this medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down.
• Keep the liquid form of this medicine from freezing.
• Do not keep outdated medicine or medicine no longer needed. Be sure that any discarded medicine is out of the reach of children.