This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Tricyclic antidepressants have all of the following actions except ? 
Select and explain. 
A. Anticholinergic action, B. MAO inhibition, C. Block 5-HT or NE reuptake, D. Causes sedation
B: MAO inhibition
Answer: B: MAO inhibition 
Explanation: Ans- B. MAO inhibitionTricyclic antidepressants (TCAS) are either NA + 5HT reuptake inhibitors (e.g. - Imipramine,Amitriptyline) or predominantly NA reuptake inhibitors (e.g. Desipramine, noriptyline).TCAs are not MAO inhibitors.Adverse effects of TCFs are : anticholinergic side effects, sedatior, mental confusion, weakness, increase appetite & weight gain, sweating & fine tremor, postural hypotension and cardiac arrhythmia.