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Combination Therapy Vs Monotherapy

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Monotherapy
When feasible, clinicians should aim to use monotherapy to reduce potential for drug-related complications and be cautious when considering combination therapy.31 Why monotherapy? If an adequate response is achieved, monotherapy is typically ideal to 32 avoid problems that come with the use of multiple drugs, eg, side effect, decreased tolerability, and weight gain.33 A 2012 study found that there were include less frequent side effects vs. combination therapy and lower discontinuation rates.34 Risks of combination therapy frequently outweighs harm compared to monotherapy. Side effects of combination therapy vs. was found in the 2011 STEP BD cohort subgroup study (n = 1,958 patients with BPD) reported side effects were dramatically …show more content…
For instance, A 2012 meta-analysis of combination therapy concluded an antipsychotic plus lithium is superior to lithium monotherapy for acute mania.34 Olanzapine plus fluoxetine is approved for BPD.38 The APA has recommended combination therapy for severe acute mania since 2002.39 For relapse prevention, lithium plus valproate has also been shown to be superior to valproate monotherapy.36 When monotherapy is partially effective or non-effective, combination therapy may have a theoretical advantage in efficacy where complementary mechanisms of action might have a synergistic, potentiating therapeutic effect, imparting some ability to treat a greater spectrum of symptoms.31,34 A potential safety advantage may be gained by allowing lower dosages that may be better-tolerated, though the introduction of multiple drugs generally increases risk of safety …show more content…
But it is imperative to identify treatments that are well-tolerated and will be accepted41 and adhered to by patients with BPD for optimal outcomes. Side effects of mood stabilizers and/or different atypical antipsychotic agents have been reported in specific domains, including antihistaminergic effects (eg, sedation, weight gain), anticholinergic (dry mouth, constipation), Alpha-1 blockade (dizziness, orthostasis), D2 antagonism (hyperprolactinemia, psychomotor slowing, extrapyramidal symptoms (EPS) (eg, tardive dyskinesia), increased serotoninergic effect (eg, sexual dysfunction), 5-HT 2 blockade (eg, priapism), weight gain with some antipsychotics and mood stabilizers and the risk of metabolic syndrome. Many patients require combination therapy, which may have a positive impact on outcomes but may also present challenges to tolerability, additional effort to deter drug drug interactions, managing side effects, and monitoring for physiologic and behavioral changes.21,35,42 For patients with BPD who experience side effects, lack of treatment tolerability has been reported as high as 60% of treated patients.43,44 Intolerability frustration could potentially effect adherence45,46 or fatigue could lead to abandonment of treatment altogether.47 Even in a study with good adherence rates, many patients have been reported to relapse into mania or depressive mood episodes.48

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