Drugs Commonly Causing Delirium or Confusional States

Analgesics:

Non-steroidal anti-inflammatory agents
Opioids (especially meperidine)

Antibiotics and Antivirals:
Acyclovir
Aminoglycosides
Amphotericin B
Antimalarials
Cephalosporins
Cycloserine
Fluoroquinolones
Isoniazid
Intereron
Linezolid
Macrolides
Nalidixic acid
Penicillins
Rifampin
Sulfonamides

Anticholingerics
Atropine
Benztropine
Diphenhydramine
Scopolamine
Trihexyphenidyl

Anticonvulsants
Carbamazepine
Phenytoin
Valproate
Vigabatrin

Antidepressants
Mirtazapine
SRRI
Tricyclic antidepressants

Cardiovascualr and Hypertension RX
Antiarrhythmics
Beta blockers
Clonidine
Digoxin
Diuretics

Corticosteroids
Dopamine Agonists

Amantadine
Bromocriptine
Levodopa
Pergolide
Pramipexole
Ropinirole

Gastrointestinal Agents
Antiemetics
Antispasmodics
Histamine-2 receptor blockers
Loperamide

Herbal Preparations
Atropa belladonna extract
Henbane
Mandreake
Jimson weed
St. John’s Wort

Hypoglycemics
Hypnotics and sedatives
Barbiturates
Benzodiazepines

Muscle Relaxants
Baclofen
Cyclobenzaprine

Other CNS-active Agents
Disulfiram
Donepezil
Interleukin-2
Lithium
Phenothiazines