Quick Facts
Generic NameFluvoxamine
Brand NameLuvox / Luvox CR
Drug ClassSSRI
FDA Approved1994 (OCD)
Starting Dose50mg at bedtime
Typical Range100–300mg/day
Max Dose300mg/day
Half-Life15.6 hours
MetabolismCYP1A2 (major), CYP2D6 (minor)
Generic AvailableYes (2000+)
What Is Luvox?
Fluvoxamine (brand name Luvox) is a selective serotonin reuptake inhibitor (SSRI) that was specifically developed and FDA-approved for the treatment of obsessive-compulsive disorder (OCD). While other SSRIs are used for OCD off-label, fluvoxamine holds a unique position as the first SSRI to receive FDA approval specifically for this condition, making it one of the most extensively studied medications for OCD in both adults and children.
Beyond its primary OCD indication, fluvoxamine is also used off-label for social anxiety disorder, major depressive disorder, panic disorder, PTSD, and generalized anxiety disorder. Its unique pharmacological profile — including potent sigma-1 receptor agonism — distinguishes it from other SSRIs and may contribute to its particular effectiveness for OCD.
Understanding fluvoxamine (Luvox) — an SSRI with specific FDA approval for OCD treatment
Manufacturer
Jazz Pharmaceuticals (originally Solvay)
How Luvox Affects Serotonin
How Luvox Works
Fluvoxamine works primarily by blocking the serotonin transporter (SERT), preventing the reuptake of serotonin from the synaptic cleft back into the presynaptic neuron. This increases serotonin availability at postsynaptic receptor sites, particularly the 5-HT1A and 5-HT2C receptors involved in mood regulation, anxiety control, and obsessive thought modulation.
What distinguishes fluvoxamine from other SSRIs is its potent agonism at sigma-1 receptors — a unique pharmacological property that may contribute to its particular effectiveness for OCD. Sigma-1 receptor activation is thought to enhance neuroplasticity, reduce inflammation, and modulate the endoplasmic reticulum stress response — mechanisms that may be especially relevant to the neurobiological underpinnings of obsessive-compulsive disorder.
Fluvoxamine is also a potent inhibitor of CYP1A2 and CYP2C19 enzymes, which is clinically important for drug interaction management. This CYP inhibition profile means your psychiatrist must carefully review all other medications you take before prescribing fluvoxamine.
Efficacy Comparison: SSRIs for OCD
Efficacy Comparison
Response & remission rates vs. comparators (Cipriani et al. meta-analysis)
Data from published meta-analyses. Individual response may vary.
Conditions Treated with Luvox
Obsessive-Compulsive Disorder (OCD)
FDA-approved for OCD in adults and children ages 8+. Fluvoxamine is one of only a few SSRIs with specific FDA OCD approval. Typical OCD doses: 100–300mg/day.
Learn about OCD →Social Anxiety Disorder
FDA-approved for social anxiety disorder (Luvox CR formulation). Reduces social fear, anticipatory anxiety, and avoidance behavior. Typical doses: 100–300mg/day.
Learn about social anxiety →Depression
Used off-label for major depressive disorder. Approved for depression in many countries outside the US. Effective at 100–300mg/day.
Learn about depression →Panic Disorder
Off-label use for panic disorder with evidence for reducing panic frequency and anticipatory anxiety. Starting dose is low (25–50mg) due to panic sensitivity.
Learn about panic disorder →PTSD
Off-label use for PTSD with evidence for reducing intrusive symptoms, hyperarousal, and avoidance.
Learn about PTSD →Body Dysmorphic Disorder
Off-label use at OCD-level doses (100–300mg) for the obsessive preoccupation and compulsive checking behaviors of BDD.
Learn about BDD →Considering Luvox for Your Treatment?
Our board-certified psychiatrists can determine if fluvoxamine is right for your specific condition and develop a personalized treatment plan.
Dosage Information
| Indication | Starting Dose | Typical Range | Maximum |
|---|---|---|---|
| OCD (Adults) | 50mg at bedtime | 100–300mg/day | 300mg/day |
| OCD (Children 8–17) | 25mg at bedtime | 50–200mg/day | 200mg (8–11) / 300mg (12–17) |
| Social Anxiety (CR) | 100mg at bedtime | 100–300mg/day | 300mg/day |
| Depression (off-label) | 50mg at bedtime | 100–300mg/day | 300mg/day |
| Panic Disorder (off-label) | 25mg at bedtime | 100–300mg/day | 300mg/day |
Dosing notes: Fluvoxamine is typically taken at bedtime due to its sedating properties. Doses above 100mg/day should be divided (immediate-release) or taken as a single dose (CR formulation). Dose increases should be made in 50mg increments every 4–7 days.
Brain Regions Targeted by Luvox
Side Effects
Like all medications, fluvoxamine has potential side effects. Most are mild, occur early in treatment, and often resolve within the first 1–2 weeks as your body adjusts. Your psychiatrist monitors for side effects at every appointment and has multiple strategies for management.
Common Side Effects (>10%)
Nausea (34–40%)
Headache (22%)
Drowsiness/Somnolence (22%)
Insomnia (21%)
Dizziness (11%)
Dry Mouth (14%)
Weakness/Asthenia (14%)
Nervousness (12%)
Less Common Side Effects (1–10%)
Constipation
Diarrhea
Decreased Appetite
Tremor
Sexual Dysfunction
Sweating
Abnormal Taste
Serious Side Effects (Seek Immediate Help)
Serotonin Syndrome (rare)
Severe Allergic Reaction
Suicidal Thoughts (under 25)
Mania/Hypomania Activation
Abnormal Bleeding
Side Effect Profile: Luvox vs. SSRI Class Average
Side Effect Profile
Incidence rates from FDA prescribing information vs. class average
Percentages from clinical trial data. Actual experience may differ.
⚠️ FDA Black Box Warning
Antidepressants, including fluvoxamine, may increase the risk of suicidal thinking and behavior in children, adolescents, and young adults (ages 18–24) during initial treatment. Monitor closely for worsening depression, suicidality, or unusual changes in behavior. This risk must be balanced with clinical need — untreated depression itself carries significant suicide risk.
Expert psychiatric medication management for OCD and anxiety with fluvoxamine (Luvox)
Drug Interactions
Fluvoxamine has a significant drug interaction profile due to its potent inhibition of CYP1A2 and CYP2C19 enzymes. This is one of the most important clinical considerations when prescribing fluvoxamine and is a key reason medication management should be supervised by a board-certified psychiatrist.
Major Interactions (Avoid)
- MAOIs — Contraindicated. Risk of serotonin syndrome. Allow 14-day washout period.
- Tizanidine — Contraindicated. Fluvoxamine's CYP1A2 inhibition dramatically increases tizanidine levels.
- Thioridazine — Contraindicated. Risk of QT prolongation.
- Pimozide — Contraindicated. Risk of cardiac arrhythmia.
Significant CYP Interactions
Fluvoxamine is a potent CYP1A2 inhibitor and moderate CYP2C19 inhibitor. It significantly increases blood levels of medications metabolized by these enzymes including: theophylline, caffeine (metabolism reduced by ~80%), clozapine, olanzapine, warfarin, benzodiazepines (alprazolam, diazepam), and certain beta-blockers.
Alcohol
Avoid alcohol during fluvoxamine treatment. Both are central nervous system depressants, and the combination increases sedation, impairs judgment, and may worsen depression and anxiety.
Generic Versions & Cost
Generic fluvoxamine has been available since 2000 and is manufactured by multiple companies. The generic version contains the same active ingredient and is FDA-certified as bioequivalent to brand-name Luvox. Generic fluvoxamine is significantly less expensive — typically $10–$30 per month depending on dose and pharmacy.
The controlled-release formulation (Luvox CR) also has generic equivalents available, though at higher cost than immediate-release generics.
Starting Luvox: What to Expect
First Weeks
Fluvoxamine is typically started at 50mg taken at bedtime (25mg for panic disorder or sensitive patients). The most common initial side effect is nausea, which usually improves within the first week. Taking the medication with food and at bedtime can minimize nausea and take advantage of fluvoxamine's sedating properties to improve sleep.
Your psychiatrist will increase the dose gradually — typically by 50mg every 4–7 days — until reaching the therapeutic range for your condition. For OCD, adequate doses are usually 150–300mg/day. Improvement in OCD symptoms typically requires 8–12 weeks at adequate doses — patience is important.
When to Contact Your Psychiatrist
Contact your psychiatrist if you experience: worsening depression or anxiety, thoughts of self-harm, unusual agitation or restlessness, severe nausea or vomiting, signs of allergic reaction, or any concerning changes in mood or behavior.
Stopping Luvox Safely
Never stop fluvoxamine abruptly. Discontinuation syndrome can produce flu-like symptoms, dizziness, nausea, sensory disturbances ("brain zaps"), irritability, and anxiety. Your psychiatrist will develop a gradual tapering schedule — typically reducing the dose by 50mg every 1–2 weeks — to minimize withdrawal effects.
Timeline: When Luvox Starts Working
Timeline to Effectiveness
Expected improvement trajectory over the first 8 weeks
Based on clinical trial data. Full therapeutic effects may take 6–8 weeks.
Get Luvox Prescribed by a Board-Certified Psychiatrist
At Psychiatry Telemed, fluvoxamine prescribing decisions are made by board-certified psychiatrists following comprehensive evaluation — not primary care providers or online prescription mills. Our psychiatrists have the pharmacological expertise to manage fluvoxamine's significant drug interaction profile, optimize dosing for your specific condition, and monitor your response through consistent monthly follow-up appointments.
We serve patients across all of Florida through HIPAA-compliant telepsychiatry. Most patients are seen within 1–3 business days. $200 initial evaluation, $100 follow-up. No insurance required.
Related Conditions
Obsessive-Compulsive Disorder
Fluvoxamine's primary FDA-approved indication — the condition it was specifically developed to treat.
Learn About OCD →Social Anxiety Disorder
FDA-approved for Luvox CR formulation — reduces social fear and avoidance.
Learn About Social Anxiety →Anxiety Disorders
Off-label but with strong clinical evidence for generalized anxiety.
Learn About Anxiety →Other SSRIs
Frequently Asked Questions
Fluvoxamine is FDA-approved for obsessive-compulsive disorder (OCD) in adults and children ages 8+, and for social anxiety disorder (Luvox CR). It is also used off-label for depression, panic disorder, PTSD, generalized anxiety, and body dysmorphic disorder.
Fluvoxamine has unique sigma-1 receptor agonism (not shared by other SSRIs), was specifically developed and approved for OCD, has a more sedating profile (useful for patients with insomnia), and has a significant CYP1A2 inhibition profile requiring careful drug interaction management.
OCD typically requires 8–12 weeks at adequate doses (150–300mg) before full benefit. Some patients notice partial improvement within 4–6 weeks. Patience is essential — OCD has a slower response timeline than depression or anxiety.
Nausea is the most common side effect (34–40% of patients), particularly during the first week. Other common effects include headache, drowsiness, insomnia, dry mouth, and dizziness. Most resolve within the first 1–2 weeks. Taking the medication with food and at bedtime helps minimize nausea.
No. Fluvoxamine is not habit-forming and has no abuse potential. However, it should not be stopped abruptly — your psychiatrist will develop a gradual tapering schedule to prevent discontinuation symptoms.
Alcohol should be avoided during fluvoxamine treatment. Both are CNS depressants, and the combination increases sedation, impairs judgment, and may worsen depression and anxiety.
Discuss with your psychiatrist. The decision involves weighing the risks of medication exposure against the risks of untreated maternal mental illness. Your psychiatrist will help you make an informed decision based on the latest evidence.
Fluvoxamine is a potent inhibitor of CYP1A2 and CYP2C19 liver enzymes, which metabolize many other medications. This means it can significantly increase blood levels of drugs processed by these enzymes. This is why psychiatric supervision — not primary care prescribing — is important for fluvoxamine.
Authoritative Resources
Medical Disclaimer: This information is for educational purposes only and does not replace professional medical advice. Always consult with a board-certified psychiatrist before starting, stopping, or changing any medication. If you are experiencing a mental health crisis, call 988 (Suicide and Crisis Lifeline) or 911.
Last reviewed: | Written by Psychiatry Telemed clinical team