Sunlenca

Sunlenca Mechanism of Action Sunlenca is a highly selective, orally active orexin-1/2 receptor antagonist. Binding: Competitive inhibition at OX₁R and OX₂R with sub‑nanomolar affinity. Effect: Disrupts the wake‑promoting orexin–hypocretin system,…

Sumatriptan

Sumatriptan Mechanism of Action Sumatriptan is a selective 5‑HT1B/1D serotonin receptor agonist that stimulates peripheral 5‑HT1B receptors on cranial blood vessels, causing vasoconstriction and decreased inflammatory mediator release; activates 5‑HT1D…

Sulfasalazine

Sulfasalazine Sulfasalazine is an anti‑inflammatory and disease‑modifying agent used primarily in inflammatory bowel disease and rheumatoid arthritis. It combines a sulfonamide moiety (sulfapyridine) with 5‑aminosalicylic acid (5‑ASA), which is released…

Sudafed

Sudafed Mechanism of Action Sudafed (pseudoephedrine) is a sympathomimetic alkaloid that functions primarily as a selective α₁‑adrenergic receptor agonist. Vasoconstriction: Stimulates α₁ receptors in the mucosal blood vessels → reduced…

Sucralfate

Sucralfate Sucralfate is a protective agent used primarily for ulcer treatment and prevention. It has a unique mechanism of adhering to ulcer bases, forming a viscous film that shields gastric…

Suboxone

Suboxone Mechanism of Action Buprenorphine – a partial μ‑opioid receptor agonist with high affinity, slowly dissociates, producing a ceiling effect on respiratory depression while providing analgesia and euphoric suppression. Naloxone…

Sublocade

Sublocade Sublocade® (generic buprenorphine), a microsphere-based extended‑release formulation, is administered subcutaneously once a month for the treatment of opioid use disorder (OUD) in adults. --- Mechanism of Action Buprenorphine is…

Stribild

Stribild Stribild is a single‑tablet antiretroviral regimen combining elvitegravir (an integrase strand transfer inhibitor), cobicistat (a pharmacokinetic enhancer), emtricitabine, and tenofovir disoproxil fumarate. It is indicated for the treatment of…

Strattera

Strattera Mechanism of Action Strattera (atomoxetine) is a selective norepinephrine reuptake inhibitor (NRI). Increases extracellular norepinephrine and dopamine in the prefrontal cortex by blocking the norepinephrine transporter (NET). Unlike stimulants,…