Fluvoxamine Maleate

Indications

Fluvoxamine Maleate is used for: Major depressive disorder, Anxiety disorders, Depression, Panic disorder, Obsessive-compulsive disorder, Posttraumatic stress disorder

Adult Dose

Oral Obsessive compulsive disorder Adult: 50 mg once daily; may increase by 50 mg every 4-7 days. Daily doses >100 mg should be given in 2 divided doses. Max: 300 mg daily. Elderly: Initial 25mg once daily. Depression Adult: Initially, 50-100 mg daily, may increase gradually up to 300 mg daily, if necessary. Doses >150 mg should be given in 2 or 3 divided doses. Hepatic impairment: Decrease dose

Child Dose

Oral Obsessive compulsive disorder Child: >8 yr: 25 mg once daily, may increase by 25 mg every 4-7 days. Doses >50 mg should be given in 2 divided doses. Reassess if no improvement after 10 wk of treatment. Max: 200 mg daily.

Renal Dose

Administration

May be taken with or without food.

Contra Indications

Hypersensitivity. Not to be used with thioridazine, terfenadine, astemizole, cisapride, pimozide, aloestron, tizanidine. Lactation.

Precautions

History of mania or seizures; liver dysfunction; presence of depressive symptoms; smokers. Treatment with MAOI should only be started at least 2 wk after stopping fluvoxamine treatment. Increased risk of suicidal ideation and behaviour when used in children, adolescents and young adults <24 yr. Pregnancy, elderly; operating hazardous machinery; withdraw gradually. Monitor prothrombin time in patients who are taking oral anticoagulants concurrently. Lactation Present in breast milk; avoid

Pregnancy-Lactation

Pregnancy Prolonged experience with fluvoxamine in pregnant women over decades, based on published observational studies, have not identified a clear drug-associated risk of major birth defects or miscarriage; there are risks associated with untreated depression in pregnancy and risks of persistent pulmonary hypertension of newborn (PPHN) and poor neonatal adaptation with exposure to selective serotonin reuptake inhibitors (SSRIs), including fluvoxamine, during pregnancy Women who discontinue antidepressants during pregnancy are more likely to experience a relapse of major depression than women who continue antidepressants; consider risk of untreated depression when discontinuing or changing treatment with antidepressant medication during pregnancy and postpartum Neonates exposed to therapy and other SSRIs or SNRIs late in the third trimester have developed complications requiring prolonged hospitalization, respiratory support, and tube feeding; such complications can arise immediately upon delivery; reported clinical findings have included respiratory distress, cyanosis, apnea, seizures, temperature instability, feeding difficulty, vomiting, hypoglycemia, hypotonia, hypertonia, hyperreflexia, tremor, jitteriness, irritability, and constant crying; these features are consistent with either a direct toxic effect of SSRIs and SNRIs or, possibly, a drug discontinuation syndrome; it should be noted that, in some cases, the clinical picture is consistent with serotonin syndrome Animal findings suggest fertility may be impaired while taking fluvoxamine Lactation Data from published literature report presence of drug in human milk; no adverse effects on breastfed infant have been reported in most cases of maternal use of fluvoxamine during breastfeeding; however, there are reports of diarrhea, vomiting, decreased sleep, and agitation; there are no data on effect of fluvoxamine on milk production Developmental and health benefits of breastfeeding should be considered along with mother’s clinical need for fluvoxamine and any potential adverse effects on breastfed child from drug or from the underlying maternal condition Monitor infants exposed to fluvoxamine through breast milk for diarrhea, vomiting, decreased sleep, and agitation

Interactions

Co-admin with fluvoxamine may increase carbamazepine toxicity and serum levels of theophylline. Lithium enhances the serotonergic effects of fluvoxamine. Anticoagulants may require dosage adjustments. Diltiazem with fluvoxamine may lead to bradycardia. Avoid alcohol. Potentially Fatal: Fluvoxamine should not be used in combination with MAOIs, or within 14 days of discontinuing treatment with MAOIs.

Adverse Effects

Side effects of Fluvoxamine Maleate : >10% Nausea (40%), Headache (22-35%), Somnolence (22-27%), Weakness (14-26%), Insomnia (20-35%), Diarrhea (11-18%), Dizziness (11-15%), Xerostomia (10-14%), Anorexia (6-14%), Abnormal ejaculation (8-11%) 1-10% Pain (10%), Dyspepsia (8-10%), Constipation (4-10%), Decreased libido (2-10%), Upper respiratory infections (9%), Anxiety (5-8%), Tremor (5-8%), Sweating (6-7%), Vomiting (4-6%), Abdominal pain (5%), Myalgia (5%), Abnormal taste (2-5%), Bruising (4%), Abnormal dreams (3%), Abnormal thinking (3%), Chest pain (3%), Palpitation (3%), Agitation (2-3%), Vasodilation (2-3%), Hypertension (1-2%), Increased LFTs (1-2%), Weight change (1-2%), Manic reaction <1% Activation of mania/hypomania, seizures (discontinue), Sinusitis Frequency Not Defined Edema, Amnesia, Apathy, Asthenia, Malaise, Nervousness, Dry mouth, Myoclonus, Cough

Mechanism of Action

Fluvoxamine, derived from aralkylketone, inhibits the re-uptake of serotonin in brain neurons.