*Impaired liver function (TCAs metabolised by liver)
*Impaired liver function (TCAs metabolised by liver)
*Hyperthyroidism (enhanced response to TCAs)
*Hyperthyroidism (enhanced response to TCAs)
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*Urinary retention <ref>Overall, K.L. 2001. Pharmacological Treatment in Behavioural Medicine: The Importance of Neurochemistry, Molecular Biology and Mechanistic Hypotheses. The Veterinary Journal, 162, 9-23</ref>.
+
*Urinary retention <ref name="Overall5">Overall, K.L. (2001). Pharmacological Treatment in Behavioural Medicine: The Importance of Neurochemistry, Molecular Biology and Mechanistic Hypotheses. The Veterinary Journal, 162, 9-23</ref>.