JAIMIESS
Clinical safety rating: caution
Comprehensive clinical and safety monograph for JAIMIESS (JAIMIESS).
Norepinephrine and dopamine reuptake inhibitor; also weakly inhibits serotonin reuptake. Enhances synaptic concentrations of norepinephrine and dopamine, particularly in prefrontal cortex.
| Metabolism | Hepatic via CYP2D6 to active metabolite hydroxybupropion; also CYP2B6 and CYP1A2 contribute. |
| Excretion | Primarily renal excretion as unchanged drug (approximately 70%) with the remainder as inactive metabolites; less than 10% excreted in feces. |
| Half-life | Terminal elimination half-life is approximately 12-15 hours in healthy adults; prolonged in renal impairment (up to 30 hours in severe impairment). |
| Protein binding | Approximately 95% bound to plasma proteins, primarily albumin. |
| Volume of Distribution | Volume of distribution is 0.5 L/kg, indicating distribution primarily in extracellular fluid. |
| Bioavailability | Oral bioavailability is approximately 70% (range 60-80%) with no significant food effect. |
| Onset of Action | Oral: 1-2 hours for peak plasma concentration; therapeutic effect typically seen within 2-4 weeks of continuous dosing. |
| Duration of Action | Duration of action is 24 hours with once-daily dosing; steady-state achieved after 5-7 days. |
100 mg orally once daily with food.
| Dosage form | TABLET |
| Renal impairment | In patients with GFR 30-89 mL/min, no dose adjustment required. For GFR 15-29 mL/min, reduce dose to 50 mg once daily. Not recommended if GFR <15 mL/min. |
| Liver impairment | For Child-Pugh Class A or B, no dose adjustment. For Child-Pugh Class C, reduce dose to 50 mg once daily. |
| Pediatric use | Safety and efficacy not established in pediatric patients. |
| Geriatric use | No specific dose adjustment based on age alone; use caution due to potential age-related renal impairment. Monitor renal function. |
| 1st trimester | Consult provider |
| 2nd trimester | Consult provider |
| 3rd trimester | Consult provider |
Clinical note
Comprehensive clinical and safety monograph for JAIMIESS (JAIMIESS).
| Breastfeeding | Excretion into human milk unknown; M/P ratio not established. Caution advised due to potential for infant toxicity. Avoid breastfeeding or use alternative therapy. |
| Teratogenic Risk | First trimester: Risk of neural tube defects, cardiovascular anomalies, and oral clefts based on animal studies and limited human data. Second and third trimesters: Potential fetal growth restriction, oligohydramnios, and fetal/neonatal nephrotoxicity. Use only if benefit outweighs risk. |
| Fetal Monitoring |
■ FDA Black Box Warning
May cause sudden death in children and adolescents with structural cardiac abnormalities or other serious heart problems; also associated with increased risk of suicidal thoughts and behaviors in children and adolescents with ADHD.
| Serious Effects |
Seizure disorder; current or prior diagnosis of bulimia or anorexia nervosa; abrupt discontinuation of alcohol, benzodiazepines, barbiturates, or antiepileptic drugs; use of MAOIs within 14 days; known hypersensitivity to bupropion or any components of the product.
| Precautions | Increased risk of suicidal thoughts and behaviors in children, adolescents, and young adults; monitoring for emergence or worsening of depression, suicidal thoughts, and unusual changes in behavior; serious cardiovascular events; seizures (dose-dependent); psychosis; mania; narrow-angle glaucoma; hypertension; allergic reactions. |
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| Serial fetal ultrasounds for growth assessment and amniotic fluid volume. Monitor maternal renal function, blood pressure, and electrocardiogram. Consider fetal echocardiography. |
| Fertility Effects | Animal studies show impaired fertility and embryotoxicity at therapeutic doses. Human data insufficient; likely reversible upon discontinuation. Men and women should use effective contraception during treatment and for 3 months after cessation. |