Fliban
Fliban (Flibanserin 100 mg) — 5-HT1A agonist / 5-HT2A antagonist for generalised acquired HSDD in pre-menopausal women. daily HS dosing for at least 8 weeks — different from sildenafil.
✓ Medically reviewed by Morgan Ellis — Pharmacy Researcher · 8 years experience · Last reviewed: May 2026
💡 Quick Answer
Fliban is flibanserin 100 mg, the first FDA-approved medication for hypoactive sexual desire disorder (HSDD) in premenopausal women (Addyi, 2015). It modulates serotonin, dopamine, and norepinephrine — it is a daily bedtime medication, not an on-demand libido pill. Effect is modest (~0.5 additional sexually satisfying events per month) and takes 4–8 weeks. Alcohol interaction requires strict avoidance.
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What Is Fliban?
Fliban is a branded generic of flibanserin (FDA-approved as Addyi), a multifunctional serotonin agonist/antagonist (MSAA). It is a 5-HT1A agonist and 5-HT2A antagonist, with secondary effects on dopamine and norepinephrine signaling — modulating the balance between sexual inhibition and excitation in the brain. Manufactured by Consern Pharma.
Not a libido “Viagra for women”: flibanserin is not an on-demand erection/arousal drug. It must be taken daily at bedtime for 4–8 weeks before effects emerge. The trials showed modest improvements (~0.5–1 additional sexually satisfying event per month) — a real but small effect.
Clinical Use
- Hypoactive Sexual Desire Disorder (HSDD) in premenopausal women — the sole FDA-approved indication. Must be generalised (not situational) and acquired (not lifelong).
- Not indicated for postmenopausal women, for generalised low mood, or for relationship-specific sexual issues.
How to Take
- Take 100 mg once daily at bedtime. Not on-demand.
- Strict alcohol avoidance — flibanserin interacts seriously with alcohol causing severe hypotension, syncope, and CNS depression. Avoid all alcohol while on flibanserin.
- Assess response at 8 weeks. If no meaningful improvement by then, discontinue — prolonged use without benefit is not recommended.
- If benefit emerges, continue indefinitely at clinician direction.
Side Effects
Common: dizziness, somnolence, nausea, fatigue, insomnia, dry mouth, hypotension.
Serious (with alcohol): severe hypotension, syncope, loss of consciousness. The FDA initially mandated a Risk Evaluation and Mitigation Strategy (REMS) requiring patients to commit to no-alcohol use before receiving the drug.
With CYP3A4 inhibitors: severe hypotension, CNS depression — see interactions.
Who Should Not Take Fliban
- Any alcohol use — strict contraindication due to serious interaction
- Concurrent strong or moderate CYP3A4 inhibitors (ketoconazole, ritonavir, clarithromycin, grapefruit juice)
- Hepatic impairment
- Postmenopausal women (not indicated)
- Pregnancy or breastfeeding
- Known hypersensitivity
Drug Interactions
- Alcohol: severe interaction — strictly avoid.
- Strong CYP3A4 inhibitors (ketoconazole, itraconazole, clarithromycin, nefazodone, ritonavir, grapefruit): contraindicated.
- Moderate CYP3A4 inhibitors (fluconazole, diltiazem, verapamil, erythromycin): avoid or monitor.
- Hormonal contraceptives: no significant interaction.
- CNS depressants: additive sedation — caution.
Storage
Store at room temperature (15–25 °C). Keep in original packaging. Keep out of reach of children.
Frequently Asked Questions
Is flibanserin "Viagra for women"?
No. Viagra is on-demand for erectile response (male) or arousal (off-label female). Flibanserin is daily at bedtime to modulate long-term sexual desire in women with diagnosed HSDD. Different mechanism, different pharmacology.
How long until I notice an effect?
4–8 weeks of daily use. If no meaningful change by week 8, discontinue — further use is unlikely to produce benefit.
How big is the effect?
Modest. Trials showed ~0.5–1 additional sexually satisfying event per month vs placebo, and improvement in sexual desire scores. Useful for some women; not transformative for most.
Why can't I drink alcohol?
Alcohol + flibanserin causes severe hypotension and loss of consciousness. This interaction was a central FDA concern and led to the REMS program. There is no safe threshold — avoid all alcohol.
Can I use flibanserin if I'm postmenopausal?
Not FDA-approved for postmenopausal use. Evidence is weaker. Low desire in postmenopausal women often has hormonal (estrogen/testosterone) or GSM contributors that should be addressed first.
What alternatives exist?
Bremelanotide (Vyleesi, on-demand injectable), testosterone (off-label, requires monitoring), sex therapy, relationship counseling, addressing contributing medications (SSRIs commonly cause low desire), and estrogen therapy for postmenopausal GSM.
Can I take flibanserin with SSRIs?
Caution — additive sedation and possibly CNS effects. SSRIs themselves commonly cause low desire; switching to bupropion or reducing SSRI dose may be preferable to adding flibanserin.
Is this covered by insurance?
Insurance coverage for flibanserin has been challenging in many jurisdictions due to the modest effect size and safety concerns. Discuss with your clinician and pharmacist.
Related Women’s Health Products
- Tamodex (Tamoxifen 10 mg)
- Tamilong (Tamoxifen 20 mg)
- Letroheal (Letrozole 2.5 mg)
- Etibo (Lapatinib 250 mg)
- Duphaston (Dydrogesterone 10 mg)
- Deviry (Medroxyprogesterone 10 mg)
- Naprosyn (Naproxen 250 mg)
⚕️ Medical Disclaimer: Information is educational and does not replace medical advice. Consult a clinician before starting, stopping, or changing any medication, particularly for cancer therapy, hormonal treatments, and prescription products.
Frequently Asked Questions
Is Fliban (flibanserin) a “female Viagra”?
No. Sildenafil works on blood-flow physiology and acts within an hour. Flibanserin is a centrally-acting serotonin 1A agonist / 2A antagonist that works on the brain pathways for sexual desire and must be taken every night for at least 8 weeks before benefit can be assessed. The two drugs treat different problems — erectile / arousal physiology versus desire — and are not interchangeable.
Why is Fliban taken at bedtime?
The most common side effects are dizziness, somnolence, and fatigue, peaking 2–4 hours after dosing. Bedtime dosing means the patient sleeps through the peak. Taking flibanserin in the morning sharply increases dizziness-related accidents.
Can I drink alcohol while taking Fliban?
Limit alcohol to one standard drink, separate it from the dose by several hours, and avoid alcohol entirely if you experience dizziness or hypotension. The original FDA black box on alcohol-flibanserin syncope was downgraded in 2019 after additional data, but caution is still warranted — especially with the first few doses.
How long until I know if Fliban works?
Trial response should be assessed at 8 weeks. If satisfying sexual events have not increased and the patient does not feel improvement, discontinue. Beyond 8 weeks, additional benefit is unlikely and continued exposure to side effects is not justified.
Who should not take Fliban?
Hepatic impairment of any degree (CYP3A4-cleared), concurrent strong or moderate CYP3A4 inhibitors (azoles, macrolides, grapefruit juice, ritonavir-based regimens), and women who are not premenopausal with acquired generalised HSDD. Postmenopausal use is off-label and not supported by trial data.
What if I miss a dose?
Skip the missed dose and take the next dose at the usual bedtime. Do not double up — flibanserin pharmacokinetics are not amenable to “catch-up” dosing.
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| Strength | 100 mg |
|---|---|
| Quantity | 4 Tablet/s, 8 Tablet/s, 16 Tablet/s, 32 Tablet/s |
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