Basic Information

Drug ID DDPD00924 ...
Drug Name Cyclobenzaprine
Molecular Weight 275.3874
Molecular Formula C20H21N
CAS Number 303-53-7
SMILES CN(C)CCC=C1C2=CC=CC=C2C=CC2=CC=CC=C12
External Links
DRUGBANK DB00924
PubChem Compound 2895
PDR 2329
Drugs.com Drugs.com Drug Page

Experimental Physicochemical Property

Property Name Property Value Unit Raw Value Raw Unit Reference
Log P 5.2 - 5.2 - DRUGBANK
Melting Point 217.0 217 FDA Label
pKa 8.47 - 8.47 - FDA Label

Pharmacokinetic/ Toxicokinetic Property

Property Name Property Value Unit Raw Value Raw Unit Annotation Reference
AUC 177.0 ng.h/ml 177.0 ng.h/ml PO, oral; DRUGBANK
Bioavailability 44.0 % 33-55 % PO, oral; DRUGBANK
C Max 20.0 ng/ml 5-35 ng/ml PO, oral; DRUGBANK
T Max 4.0 h 4 h PO, oral; DRUGBANK
Clearance 42.0 L/h ~0.7 L/min Plasma clearance; DRUGBANK
Volume of Distribution 146.0 L ~146 L DRUGBANK
Half-life 18.0 h ~18 h effective half-life; normal,healthy; young; DRUGBANK
Half-life 33.4 h 33.4 h Elderly; DRUGBANK
Half-life 46.2 h 46.2 h effective half-life; hepatic insufficiency; DRUGBANK
Toxicity LD50 338.0 mg/kg 338.0 mg/kg PO, oral; mouse; DRUGBANK
Toxicity LD50 425.0 mg/kg 425.0 mg/kg PO, oral; Rattus, Rat; DRUGBANK
Eliminate Route 44.5 % 38-51 % Urinary excretion; DRUGBANK
Eliminate Route 14.5 % 14-15 % Faeces excretion; DRUGBANK
Eliminate Route 1.0 % ~1 % Urinary excretion; Unchanged drug; DRUGBANK
Protein Binding 93.0 % ~93 % plasma proteins; DRUGBANK

Maximum Dosage

Property Name Property Value Unit Raw Value Raw Unit Annotation Brand Name Component Reference
Max dose for adolescents 30.0 mg/day 30 mg/day Tablet,PO,oral Amrix cyclobenzaprine hydrochloride PDR
Max dose for adults 30.0 mg/day 30 mg/day PO, oral Amrix cyclobenzaprine hydrochloride PDR
Max dose for geriatric 30.0 mg/day 30 mg/day PO, oral Amrix cyclobenzaprine hydrochloride PDR

Drug Property Radar Chart

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Note: Center: Q1-1.5*IQR, Edge: Q3+1.5*IQR; Q1: Quantile 1, Q3: Quantile 3, IQR: Q3-Q1