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Bupropion XL 450 mg

FORFIVO XL

Pronunciation: byoo-PROE-pee-on (for-FYE-voe)

Bupropion XL 450 mg ballicule: receptor binding, kinetics and half-life diagram
Mechanism of action: Bupropion XL 450 mg ballicule
Bupropion XL 450 mg WELLBUTRIN mascot mnemonic cartoon
Visual mnemonic: Bupropion XL 450 mg mascot
“Boop ropin’ Well booty”
Strong CYP2D6 inHibitor
Skinny → weight loss possible

What it isBupropion HCl 450 mg single-tablet XL (FORFIVO XL, 2011) — one tablet replaces 3x150 XL at the top dose.

Why this oneSame molecule and receptor pharmacology as the parent card — the formulation (and its label) is the difference.

What limits itClass warnings of the parent molecule apply unchanged.

Bupropion XL 450 mg molecular structure (skeletal formula)
Molecular structure: Bupropion XL 450 mg

FDA-approved for

FDA label

BOXED WARNING Suicidal thoughts and behaviors — antidepressants increased the risk in children, adolescents, and young adults; monitor closely. FORFIVO XL is not approved for use in pediatric patients.
FDA dosingPopulationStartTargetMax
Major depressive disorder (MDD)AdultsDo not initiate with FORFIVO XL; use another bupropion formulation to titrate. Use in patients on 300 mg/day of another bupropion formulation ≥2 weeks who require 450 mg/day450 mg QD450 mg/day

Renal Not recommended (no lower dose strength available)

Hepatic Not recommended (no lower dose strength available)

450 mg is the only available strength; do not exceed 450 mg/day and do not initiate therapy with FORFIVO XL.

Instructions

Available strengths

Contraindications

Cautions

Adverse reactions

Pregnancy First-trimester epidemiologic data have not identified an increased overall risk of congenital malformations; weigh against risks of untreated depression.

Lactation Bupropion and metabolites present in human milk (~2% of maternal weight-adjusted dose); seizures reported in breastfed infants.

Cost

Bupropion XL 450 mg (FORFIVO XL)
What pharmacies pay · NADAC 9/30/26
Strength#/mogeneric $/moCostPlus
450 mgER tab30 qd$239.87not offered

Other forms: Bupropion (WELLBUTRIN) · Bupropion hydrobromide ER (APLENZIN) · Bupropion SR (WELLBUTRIN SR) · Bupropion XL (WELLBUTRIN XL)

Available combined with: dextromethorphan / bupropion · naltrexone / bupropion

⚠ BOXED WARNING

Classes and tags

Clinical profile

Therapeutic safety burden2 / 4
Overdose danger4 / 4
Weight-gain liability0 / 4
Sedation liability0 / 4
QT / Torsades0 / 4
Direct muscarinic antagonism0 / 4
Embryofetal risk1 / 4

Legacy pregnancy categoryC

Defining liabilityDose-related seizures and delayed cardiotoxicity are prominent in overdose, especially with extended-release products.

Active metabolites

Open Bupropion XL 450 mg in the interactive console ↗

Memory aids: interaction avatars

Bupropion XL 450 mg CYP2B6 substrate avatar mnemonic
CYP2B6 substrate
Bupropion XL 450 mg CYP2D6 inhibitor avatar mnemonic
CYP2D6 inhibitor (strong)

Open Bupropion XL 450 mg in the interactive console ↗