Ketiapin ve Triheksifenidil etkileşimi

Neuroleptic Malignant Syndrome A potentially fatal symptom complex sometimes referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with dose reduction or discontinuation of trihexyphenidyl.

Prophylactic administration of anticholinergic agents, such as trihexyphenidyl, as a prevention of drug-induced parkinsonism during neuroleptic therapy is not recommended.

Concurrent use of alcohol or other CNS depressants with trihexyphenidyl may cause increased sedative effects.

There may be an increased risk for the development of tardive dyskinesia during concomitant administration of anticholinergics and neuroleptics (See PRECAUTIONS, General ).

• Anticholinergic (antimuscarinic) Effects: Use with caution with other anticholinergic drugs and in patients with urinary retention, prostatic hypertrophy, or constipation (5.20)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system (CNS) pathology.

This contributes to anticholinergic adverse reactions when SEROQUEL XR is used at therapeutic doses, taken concomitantly with other anticholinergic medications, or taken in overdose.

SEROQUEL XR should be used with caution in patients receiving medications having anticholinergic (antimuscarinic) effects [see Drug Interactions (7.1) , Overdosage (10.1) , and Clinical Pharmacology (12.1) ] .

Anticholinergic Drugs: Concomitant treatment with quetiapine and other drugs with anticholinergic activity can increase the risk for severe gastrointestinal adverse reactions related to hypomotility.