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TRIPHEN-2MG

TRIPHEN-2MG
(10)

Composition:

TRIHEXYPHENIDYL HYDROCHLORIDE-2MG

Group Name:

ANTI-PARKINSONIAN DRUGS

Manufacturer:

SUN PHARMA LTD

Rs 2.26 / TAB
Rs 2.43 7% off

Product Details

Trihexyphenidyl HCl

A to Z Drug Facts

Trihexyphenidyl HCl

 

  Action
  Indications
  Contraindications
  Route/Dosage
  Interactions
  Lab Test Interferences
  Adverse Reactions
  Precautions
Patient Care Considerations
  Administration/Storage
  Assessment/Interventions
  Patient/Family Education



(try-hex-ee-FEN-in-dill HIGH-droe-KLOR-ide)
Artane, Artane Sequels, Trihexy-2, Trihexy-5,  Aparkane, Apo-Trihex, Novo-Hexidyl, PMS-Trihexyphenidyl, Trihexyphen
Class: Antiparkinson/anticholinergic

 Action Exerts direct inhibitory effect on parasympathetic nervous system by inhibiting actions of acetylcholine; has relaxing effect on smooth musculature.

 Indications Adjunct in treatment of all forms of parkinsonism (postencephalitic, arteriosclerotic and idiopathic); adjuvant therapy with levodopa for control of drug-induced extra-pyramidal disorders. Sustained release: Maintenance therapy after patients have been stabilized on tablets or elixir.

 Contraindications Standard considerations.

 Route/Dosage

Parkinsonism

ADULTS: PO 1 or 2 mg first day; increase by 3 mg increments at intervals of 3–5 days, until 6–10 mg given daily in divided doses. Some postencephalitic patients may require total daily dose of 12–15 mg. Usually given tid at mealtimes. High doses may be taken qid, at mealtimes and at bedtime.

Concomitant Use with Other Anticholinergics

Gradually initiate trihexyphenidyl with progressive reduction of other anticholinergic.

Drug-Induced Extrapyramidal Disorders

Amount and frequency is individualized. Start with single 1 mg dose. If symptoms are not controlled in few hours, progressively increase until controlled. Daily dosage usually ranges 5–15 mg in divided doses.

Sustained Release

Not for initial therapy. Once patient is stabilized, may switch on equipotent daily basis. Give as single dose after breakfast or in bid doses 12 hr apart.

 Interactions

Haloperidol: Schizophrenic symptoms may worsen; haloperidol levels may decrease and tardive dyskinesia may develop. Phenothiazines: Actions of phenothiazines may be decreased.

 Lab Test Interferences None well documented.

 Adverse Reactions

CV: Tachycardia; palpitations; hypotension. CNS: Dizziness; nervousness; psychiatric manifestations such as delusions or hallucinations; mental confusion; agitation; disturbed behavior. DERM: Rash. EENT: Blurred vision; angle-closure glaucoma; difficulty swallowing. GI: Dry mouth; nausea; vomiting; constipation; suppurative parotitis; dilation of colon; paralytic ileus. GU: Urinary retention; urinary hesitancy; impotence. OTHER: Fever; flushing; decreased sweating; heat illness.

 Precautions

Pregnancy: Category C. Lactation: Undetermined. Children: Safety and efficacy not established. Elderly patients: More susceptible to adverse effects. Special risk patients: Use drug with caution in patients with tachycardia, arrhythmias, hypertension, hypotension, prostatic hypertrophy, liver or kidney disorders, obstructive disease of GI tract. Anticholinergic effect: Concomitant use of other drugs with anticholinergic effects will have additive effects. Heat illness: Give with caution during hot weather. Severe anhidrosis and fatal hyperthermia may occur. Ophthalmic: Incipient narrow-angle glaucoma may be precipitated by drug use; therefore closely monitor patient for symptoms and evaluate intraocular pressure at regular, periodic intervals.

PATIENT CARE CONSIDERATIONS


 

 Administration/Storage

  • Do not crush sustained release product or allow patient to chew.
  • Store at room temperature in light-resistant container. Avoid freezing the elixir.

 Assessment/Interventions

  • Obtain patient history, including drug history and any known allergies.
  • Assess Parkinson's symptoms prior to and throughout therapy.
  • Implement safety precautions to prevent injury, particularly during initial therapy until individual response is determined.
  • Encourage frequent oral hygiene.
  • Implement measures to prevent constipation, ie, fluids, activity, dietary bulk.
  • Monitor for side effects: dry mouth, nausea, dizziness, nervousness, blurred vision. If dry mouth occurs, provide patient with ice chips or sugarless hard candy or sugarless gum for comfort.
  • Monitor for other anticholinergic side effects: constipation, difficulty voiding. If these effects are noted, increase patient's fluid intake and notify physician if problematic.
  • Monitor vital signs per routine and more frequently when increasing dose.
  • Monitor frequency of bowel movements, I&O.
  • If patient complains of sudden onset of eye pain and blurred vision, discontinue drug and notify physician.
  • Assess for behavioral changes, particularly in individuals with history of mental disorder.
OVERDOSAGE: SIGNS & SYMPTOMS
  CNS depression, dry skin, dry mucous membranes, fever, dilated, sluggish pupils, respiratory depression, circulatory collapse, coma

 Patient/Family Education

  • Advise patient to take as directed and not to change dose unless advised by physician.
  • Tell patient to be cautious during hot weather to prevent heat-related illness.
  • Explain measures to prevent constipation.
  • Encourage frequent oral hygiene and use of ice chips and sugarless gum or sugarless hard candy if dry mouth is experienced.
  • Identify types of measuring devices that will ensure accurate dosage of elixir.
  • Advise patient that therapeutic effect may not be immediately evident.
  • Explain rationale for tapering of other anticholinergic drugs on initiation of therapy.
  • Instruct patient not to stop taking drug abruptly.
  • Explain potential side effects and what should be reported to physician.
  • Advise patient that drug may cause drowsiness and dizziness and to use caution while driving or performing tasks requiring mental alertness.
  • Instruct patient not to take otc medications without consulting physician.

Books@Ovid
Copyright © 2003 Facts and Comparisons
David S. Tatro
A to Z Drug Facts

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