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The recommended dosage of Flibanserin is 100 mg administered orally once per day at bedtime. Flibanserin is dosed at bedtime because administration during waking hours increases the risks of hypotension, syncope, accidental injury, and central nervous system (CNS) depression (such as somnolence and sedation). If a dose of Flibanserin is missed at bedtime, instruct the patient to take the next dose at bedtime on the next day. Instruct the patient to not double the next dose.

Pediatric Use: Flibanserin is not indicated for use in pediatric patients.

Geriatric Use: Flibanserin is not indicated for use in geriatric patients. Safety and effectiveness have not been established in geriatric patients.

Most common adverse reactions are Dizziness, Somnolence, Nausea, Fatigue, Insomnia, Dry mouth.

Flibansetrin has high affinity for serotonin receptors in the brain: it acts as an agonist on 5-HT1A and an antagonist on 5-HT2A. In vivo, flibanserin binds equally to 5-HT1A and 5-HT2A receptors. However, under higher levels of brain 5-HT (i.e., under stress), flibanserin may occupy 5-HT2A receptors in higher proportion than 5-HT(1A) receptors. It may also moderately antagonize D4 (dopamine) receptors and 5-HT2B and 5-HTB2C. Its action on neurotransmitter receptors may contribute to reduction in serotonin levels and increase in dopamine and norepinephrine levels, all of which may play part in reward processing.

Hypotension and Syncope with Flibanserin Alone: Patients with pre-syncope should immediately lie supine and promptly seek medical help if symptoms do not resolve.

Central Nervous System (CNS) Depression (e.g., Somnolence, Sedation): Can occur with Flibanserin alone. Exacerbated by other CNS depressants, and in settings where flibanserin concentrations are increased. Patients should avoid activities requiring full alertness (e.g., operating machinery or driving) until at least 6 hours after each dose and until they know how Flibanserin affects them.

Serotonin-norepinephrine reuptake inhibitor (SNRI)