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Procyclidine is used for the adjunctive treatment of all forms of parkinsonian syndrome. It is mainly used for the symptomatic treatment of idiopathic (paralysis agitants), postencephalitic and arteriosclerotic parkinsonian. It is used to control troublesome extrapyramidal symptoms including pseudoparkinsonian, acute dystonic reactions and akathisia induced by neuroleptic drugs such as phenothiazine derivatives.
Dosage & Administration
Tablet: This is administered orally, preferably after meals.
- Parkinsonism: Initially 2.5 mg 3 times a day, then 5 mg 3 times a day and occasionally 5 mg at bedtime. The dosage being adjusted as tolerated or until the total daily dose reaches 20 to 30 mg divided into 3 to 4 doses.
- Drug induced extrapyramidal symptom: Initially 2.5 mg 3 times a day. The dosage being increased by 2.5 mg increment per day as needed and tolerated.
IM or IV injection: 5-10 mg, repeated if necessary after 20 minutes; maximum 20 mg daily can be given.
At usual dosage levels dryness of the mouth is generally the only adverse effect. Mydriasis, blurred vision and adverse G.I. effects (nausea, vomiting, epigastric distress, constipation) occur occasionally. An allergic reaction (e.g. rash) or muscular weakness may occasionally occur. High doses may cause vertigo and possibly confusion and hallucination. Adverse effect may usually be minimized by adjustment of dosage and administration after meal.
Pregnancy & Lactation
The safe use of this drug in pregnancy, lactation or in women of childbearing age requires that the potential benefits be weighed against the possible hazards to the mother and child.
Precautions & Warnings
Precaution should be taken in case of hepatic & renal impairment, children, elderly, pregnancy and lactation condition. Patients with mental disorders occasionally experience a precipitation of a psychotic episode when Procyclidine is administered for the treatment of the extrapyramidal side-effects of neuroleptic. Procyclidine should not be withdrawn abruptly as rebound Parkinsonism symptoms may occur.
Use in Special Populations
Use in children: Safety and efficacy have not been established in the pediatric age group; therefore the use of Procyclidine hydrochloride is this group requires that the potential benefits be weighed against the possible hazards to children.
Protect from light and moisture, store below 25°C. Keep out of the reach of children.