›Target 1.5-3 mg/day for bipolar depression
›Slower titration reduces akathisia risk
›Side effects
›Akathisia: most common adverse effect
›Minimal weight gain
›No significant metabolic effects
›Evidence
›FDA approved for bipolar I depressive episodes
›NNT ~7-8 for response vs placebo
›Lumateperone
›Dosing
›42 mg/day fixed dose
›No titration required
›Take at same time each day
›Side effects
›Favorable metabolic profile
›Somnolence and dizziness
›Minimal extrapyramidal effects
›Evidence
›Approved for BD I and BD II depressive episodes
›Effective as monotherapy and adjunct
›Olanzapine-fluoxetine combination (OFC)
›Dosing
›6 mg/25 mg starting dose
›Maximum 12 mg/50 mg
›Titrate based on response and tolerability
›Side effects
›Highest response rate ~57% vs placebo
›Significant weight gain >= 7% in ~30% of patients
›Metabolic monitoring essential
›Evidence
›FDA approved for BD I depressive episodes
›Highest NNH for weight gain among approved agents
›Lithium
›Dosing for bipolar depression
›Starting dose 300 mg two to three times daily
›Target level 0.6-0.8 mEq/L for depressive episodes
›Titrate over 1-2 weeks based on level and tolerability
›Monitoring
›Level, renal function, and TSH at baseline then every 6-12 months
›Level check 5-7 days after dose change
›Maintain consistent sodium and fluid intake
›Anti-suicidal properties
›Reduces suicidality in bipolar disorder beyond mood stabilization
›Class I recommendation for suicide risk reduction
›Toxicity
›Early: tremor, nausea, diarrhea, polyuria
›Moderate: ataxia, confusion, slurred speech
›Severe: seizures, cardiac arrhythmia at levels > 2.0 mEq/L
›Lamotrigine
›Dosing (slow titration mandatory)
›Week 1-2: 25 mg/day
›Week 3-4: 50 mg/day
›Week 5: 100 mg/day
›Target maintenance 100-200 mg/day
›Rash risk management
›Stevens-Johnson syndrome risk 5-10%
›Counsel on immediate discontinuation with any rash
›Slower titration with valproate co-administration (halve dose)
›Clinical notes
›Effective for depressive relapse prevention
›Monotherapy may not be adequate for acute bipolar depression per VA/DoD
›Adjunct to lithium or quetiapine preferred for acute treatment
›Valproate
›Dosing
›500-750 mg/day divided doses starting
›Target level 50-100 mcg/mL (350-700 mmol/L)
›Extended release formulation for tolerability
›Monitoring
›Trough level, LFTs, CBC, weight
›Ammonia if mental status changes
›Absolute contraindication in pregnancy (FDA Category X-like teratogenicity)
›Evidence level
›Class IIa recommendation as adjunct for bipolar depression
›Less robust acute depression evidence than lithium
Cautions and contraindications
›Antidepressant monotherapy risks
›Treatment-emergent mania or hypomania
›Risk up to 12% in RCTs, up to 30% in retrospective studies
›Higher risk in BD I than BD II
›Rapid cycling induction
›Antidepressants can precipitate rapid cycling (>= 4 episodes/year)
›Avoid in patients with rapid cycling history
›Higher switch risk agents
›Tricyclic antidepressants: highest switch risk
›SNRIs: intermediate switch risk
›SSRIs and bupropion: lowest switch risk if used
›If antidepressant used
›Must combine with mood stabilizer or atypical antipsychotic
›Avoid in mixed features, rapid cycling, prior antidepressant-induced destabilization
Non-pharmacologic treatments
›Psychotherapy
›Cognitive behavioral therapy for bipolar (CBT-BP)
›Relapse prevention and coping skills
›Efficacy as adjunct to pharmacotherapy
›Interpersonal and Social Rhythm Therapy (IPSRT)
›Regularizes sleep-wake and social rhythms
›Reduces relapse rates as adjunct
›Psychoeducation
›Illness course and prodrome recognition
›Medication adherence and side effect management
›Electroconvulsive therapy (ECT)
›Indications
›Severe or psychotic bipolar depression unresponsive to pharmacotherapy
›Catatonia refractory to benzodiazepines
›Pregnancy where pharmacotherapy is high risk
›Efficacy
›Response rates 60-80% in treatment-resistant bipolar depression
›Rapid onset particularly useful in life-threatening presentations
›Contraindications
›No absolute contraindications
›Relative: elevated intracranial pressure, recent MI, unstable cardiac disease
›Lifestyle interventions
›Sleep hygiene
›Regular sleep-wake schedule reduces cycling
›Avoid night shift work if possible
›Substance avoidance
›Alcohol abstinence or reduction
›Cannabis avoidance: worsens mood swings
›Physical activity
›Aerobic exercise as adjunct reduces depressive symptoms
›Moderate intensity 30 minutes 3-5 days/week