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Trimipramine Withdrawal and Cross-Tapering Trimipramine to Either Imipramine Or Amitriptyline

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Trimipramine Withdrawal and Cross-Tapering Trimipramine to Either Imipramine Or Amitriptyline Trimipramine Withdrawal and Cross-Tapering Withdrawal effects may occur within 5 days of stopping treatment with antidepressant drugs; they are usually mild and self-limiting, but in some cases may be severe. The risk of withdrawal symptoms is also increased if the antidepressant is stopped suddenly after regular administration for 8 weeks or more. The dose should preferably be reduced gradually over about 4 weeks, or longer if withdrawal symptoms emerge (6 months in patients who have been on long-term maintenance treatment). When changing from one antidepressant to another, abrupt withdrawal should usually be avoided. Cross-tapering is preferred, the dose of the old drug is slowly reduced while the new drug is slowly introduced. Trimipramine may be changed to imipramine as a like for like replacement but alternatively an SSRI or Mirtazapine may be used. Trimipramine to either imipramine or amitriptyline Tricyclics should be cross-tapered from one to another cautiously. Doses below are expressed as total daily dose and do not reflect the frequency. See BNF and product specification for maximum daily dose and frequency (BNF doses may differ from SPC). The lowest effective dose should be used and adjusted individually to patient’s response. BNF does not recommend amitriptyline for depression but it is widely used for neuropathic pain. Reducing from trimipramine 150mg Medication Current total Week Week Week Week Week Week Week Week Notes daily dose One Two Three four Five Six Seven Eight Trimipramine 150mg 125mg 100mg 75mg 50mg 25mg 20mg 10mg 0mg Imipramine or 0mg 50mg 50mg 75- 100mg 125mg 125mg 150mg 150mg Usual imipramine maintenance dose 50-100mg amitriptyline 100mg Usual amitriptyline maintenance 50-75mg; 150mg max Reducing from trimipramine 100mg Medication Current total Week One Week Two Week Three Week Four Week Five Week Notes daily dose Six Trimipramine 100mg 75mg 50mg 25mg 20mg 10mg 0mg Imipramine or 0mg 25mg 50mg 75mg 75-100mg 75-100mg 75- Usual imipramine maintenance dose 50-100mg amitriptyline 100mg Usual amitriptyline maintenance 50-75mg; 150mg max Reducing from trimipramine 75mg Medication Current total daily dose Week One Week Two Week Three Week Four Notes Trimipramine 75mg 50mg 25mg 10mg 0mg Imipramine or 0mg 25mg 50mg 75mg 75-100mg Usual imipramine maintenance dose 50-100mg amitriptyline Usual amitriptyline maintenance 50-75mg; 150mg max 1 Trimipramine to SSRI The dose of tricyclics must be halved before cross-tapering to SSRIs. Doses below are expressed as total daily dose and do not reflect the frequency. See BNF and product specification for maximum daily dose and frequency (BNF doses may differ from SPC). The lowest effective dose should be used and adjusted individually to patient’s response. Reducing from Trimipramine 150mg Medication Current total Week Week Week Week Week Week Week Week Eight Notes daily dose One Two Three Four Five Six Seven Trimipramine 150mg 75mg 60mg 50mg 40mg 30mg 20mg 10mg 0mg Citalopram 0mg 10mg 10mg 20mg 20mg 30mg 30mg 30mg/40mg 30mg/40mg Maximum of 40 mg a day Fluoxetine 0mg 10mg 10mg 20mg 20mg 30mg 30mg 40mg 40mg Maximum of 60mg. Paroxetine 0mg 10mg 10mg 20mg 20mg 30mg 30mg 40mg 40mg Maximum of 50mg Sertraline 0mg 25mg 25mg 50mg 50mg 75mg 75mg 100mg 100mg Maximum of 200 mg. Reducing from trimipramine 100mg Medication Current total Week One Week Two Week Three Week Four Week Five Notes daily dose Trimipramine 100mg 50mg 30mg 20mg 10mg 0mg Citalopram 0mg 10mg 10mg 20mg 30mg/40mg 30mg/40mg Maximum of 40 mg a day Fluoxetine 0mg 10mg 10mg 20mg 30mg 40mg Maximum of 60mg. Paroxetine 0mg 10mg 10mg 20mg 30mg 40mg Maximum of 50mg Sertraline 0mg 25mg 50mg 75mg 100mg 150mg Maximum of 200 mg. Reducing from trimipramine 75mg Medication Current total Week One Week Two Week Three Week Four Week Five Notes daily dose Trimipramine 75mg 30mg 30mg 20mg 10mg 0mg Citalopram 0mg 10mg 10mg 20mg 30mg/40mg 30mg/40mg Maximum of 40 mg a day Fluoxetine 0mg 10mg 10mg 20mg 30mg 40mg Maximum of 60mg. Paroxetine 0mg 10mg 10mg 20mg 30mg 40mg Maximum of 50mg Sertraline 0mg 25mg 50mg 75mg 100mg 150mg Maximum of 200 mg. 2 Trimipramine to mirtazapine Tricyclics should be Cross-tapered cautiously to mirtazapine. Doses below are expressed as total daily dose and do not reflect the frequency. See BNF and product specification for maximum daily dose and frequency (BNF doses may differ from SPC). The lowest effective dose should be used and adjusted individually to patient’s response. Reducing from Trimipramine 150mg Medication Current total daily Week Week Week Week Week Week Week Week Notes dose One Two Three Four Five Six Seven Eight Trimipramine 150mg 125mg 100mg 75mg 50mg 25mg 20mg 10mg 0mg Mirtazapine 0mg 15mg 15mg 15mg 15mg 30mg 30mg 30mg 30mg Effective daily dose is usually between 15 and 45 mg. Reducing from Trimipramine 100mg Medication Current total daily Week Week Week Week Week Week Six Notes dose One Two Three Four Five Trimipramine 100mg 75mg 50mg 25mg 20mg 10mg 0mg Mirtazapine 0mg 15mg 15mg 15mg 15mg 30mg 30mg Effective daily dose is usually between 15 and 45 mg. Reducing from Trimipramine 75mg Medication Current total daily dose Week Week Week Week four Notes one two three Trimipramine 75mg 50mg 25mg 10mg 0mg Mirtazapine 0mg 15mg 15mg 15mg 30mg Effective daily dose is usually between 15 and 45 mg. The speed of cross-tapering is best judged by monitoring patient tolerability. No clear guidelines are available, so caution is required. If patients are not tolerating, cross taper more slowly. Maximum dose is dependent on individual patient’s response. Dosage adjustments should be made carefully on an individual patient basis, to maintain the patient at the lowest effective dose. Dosage during long-term therapy should be kept at the lowest effective level, with subsequent adjustment depending on therapeutic response. 3 Trimipramine to trazodone Tricyclics should be cross-tapered from one to another cautiously. Doses below are expressed as total daily dose and do not reflect the frequency. See BNF and product specification for maximum daily dose and frequency (BNF doses may differ from SPC). The lowest effective dose should be used and adjusted individually to patient’s response. Reducing from trimipramine 150mg Medication Current total Week Week Week Week Week Week Week Week Notes daily dose One Two Three four Five Six Seven Eight Trimipramine 150mg 125mg 100mg 75mg 50mg 25mg 20mg 10mg 0mg trazodone 0mg 0mg 50mg 50mg 100mg 100mg 150mg 150mg 150mg Usual maintenance dose 150mg in depression higher doses can be used Reducing from Trimipramine 100mg Medication Current total Week One Week Two Week Three Week Four Week Five Week Six Notes daily dose Trimipramine 100mg 75mg 50mg 25mg 20mg 10mg 0mg trazodone 0mg 0mg 50mg 50mg 100mg 100mg 100mg Doses lower than 150mg daily can be effective in the elderly to be cautious, Higher doses may be needed in some Reducing from Trimipramine 75mg Medication Current total Week One Week Two Week Three Week Four Notes daily dose Trimipramine 75mg 50mg 25mg 10mg 0mg trazodone 0mg 50mg 50mg 100mg 100mg Doses lower than 150mg daily can be effective in the elderly so be cautious, Higher doses may be needed in some References BNF online (2017) ‘Antidepressant drugs’, Available at: https://www.medicinescomplete.com/mc/bnflegacy/current/PHP2347-antidepressant-drugs.htm (Accessed: 20/09/17) Summaries of Product Characteristics online, Available at: https://www.medicines.org.uk/emc/ (Accessed: 20/09/17) The Maudsley Prescribing Guidelines 10th Edition Version 2.1 (updated to include amitriptyline) Developed by Pharmacy & Medicines Optimisation Team, HVCCG with thanks to Mid Essex CCG Medicines Management Team Date ratified v1.1 October 2017; v2.1 March 2018 (Medicines Optimisation Clinical Leads group) v1.1 October 2017 (Primary Care Commissioning Committee) Review date October 2020 4 .
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