Drug Interaction:
Tetracyclic antidepressants include - Mirtazapine and Maprotiline, Mianserin Refer - Mitrazapine
MAOs, alcohol, barbiturates Benzodiazepines, antihypertensives Carbamazepine, phenytoin, primidone, phenobarbital, Artemether/ lumefantrine Pimozide, sibutramine
Indication:
Depression
Tetracyclic antidepressants include - Mirtazapine and Maprotiline, Mianserin
Refer - Mitrazapine
Adverse Reaction:
Anticholinergics effect (eg dry mouth, constipation, urinary retention, blurred vision ) Blood dyscrasis Tinnitus, confusion, drowsiness,headache, Tremor, tremor, Ataxia, seizures, movement disorders
Dyskinesias , arthalgia Cardiovascular effects ( eg, hypotension, tachycardia, syncope, conduction disturbance, arrthymias)
Taste disturbances, G I upset, Sweating, allergic skin reactions, (including rash ) Urticaria, photosentivity
Weight changes, libido changes, Impotenence, testicular swelling, Galactorrhoea, changes in blood sugar concentrations Hyponatremia, hepatic impairment, Jaundice, behavioural disturbances, Hostility, aggression, Increased risk of bone fractures in age 50 years and above
Contra-Indications:
Hypersens,mania. severe liver disease Recent MI , arrhythmias, heart block Lactation
Special precautions:
Monitor full blood ccount every 4 weeks during first 3 months of therapy and then continue with clinical monitoring
Discontinue treatment and peform full blood count if signs of infectiondevelops eg. fever, sore throat, Stomatitis Elderly Diabetes
History of eplepsy, urinary retention, prostatic hypertrophy narrow angle glaucoma or increased intraocular pressure Renal, liver or cardiac insufficiency
Phaeocromocytoma Hyperthyroidism, monitor carefully History of maina or psychoses Monitor for sicidal ideation.
Concurrent ECT Porphyria Withdraw gradually Pregnancy
Dosages/ Overdosage Etc:
Depression
Dosage
Adult- initially 30 -40mg daily gradually increased if necessary
Maint- 30 to 90 mg daily as a single dose Max 200mg/day Elderly- initially 30mg slowly increased if necessary
Patient Information:
Tetracyclic antidepressants include - Mirtazapine and Maprotiline, Mianserin
Refer - Mitrazapine
Pharmacology/ Pharmacokinetics:
Pharmacology-
Mianserin is thought to act mainly by enhancing noredrinrine release. It is also a weak inhibitor of of setonin reuptake and has some serotonin blocking actions. Cardiovascular effects and anti-chloinergic side effects are much reduced. Mianserin tends to be sedating while Maprotiline , another tetracyclic is not
Interaction with Food:
Reports not available
Pregnancy and lactation:
Contraindicated for use during pregnancy Observe caution if required to be used