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Tramadol

ULTRAM

What it isWeak mu-opioid agonist that also inhibits serotonin and norepinephrine reuptake; moderate pain.

Why this oneIts analgesia depends partly on a CYP2D6-generated opioid metabolite, making response unusually variable.

What limits itSeizures, serotonin syndrome and respiratory depression are the traps; CYP2D6 inhibitors can blunt analgesia.

FDA-approved for

Off-label

FDA label

BOXED WARNING Addiction, abuse, and misuse; life-threatening respiratory depression; accidental ingestion can be fatal; risks with benzodiazepines/CNS depressants; neonatal opioid withdrawal syndrome; ultra-rapid metabolism risk in children.
FDA dosingPopulationStartTargetMax
Pain (moderate to moderately severe)Adult25 mg QAM, titrate +25 mg q3days to 25 mg QID50-100 mg q4-6h PRN after titration400 mg/day (300 mg/day if >75 yr)

Titration Increase every 3 days during titration

Renal CrCl <30 mL/min: dosing interval q12h, max 200 mg/day

Hepatic Severe impairment: 50 mg q12h

Max 400 mg/day (300 mg/day if >75 yr)

Instructions

Contraindications

Cautions

Adverse reactions

Pregnancy Prolonged use may cause neonatal opioid withdrawal syndrome; insufficient data on birth defects

Lactation Breastfeeding not recommended

⚠ BOXED WARNINGS

Cost, est. cash$10–$300/month

Generic entry2002

Classes and tags

Clinical profile

Therapeutic safety burden3 / 4
Overdose danger4 / 4
Weight-gain liability0 / 4
Sedation liability2 / 4
QT / Torsades0 / 4
Direct muscarinic antagonism0 / 4
Embryofetal risk2 / 4

Legacy pregnancy categoryC

Defining liabilityRespiratory depression, dependence and overdose; risk rises sharply with sedatives or impaired clearance.

Active metabolites

Mechanism of action: Tramadol ballicule

Tramadol ballicule: receptor binding, kinetics and half-life diagram

Open Tramadol in the interactive console ↗

Memory aids: mascots and interaction avatars

Tramadol ULTRAM mascot mnemonic cartoon
“Ultra-ram Trauma doll”
Tramadol CYP2D6 substrate avatar
CYP2D6 substrate
Tramadol CYP3A4 substrate avatar
CYP3A4 substrate

Open Tramadol in the interactive console ↗