Drug

D1421 | Erythromycin

Molecular Formula C37H67NO13
Molecular Weight 733.9
Structure
State solid
Clearance CL (l/h/kg) in healthy subjects: 0.53 ± 0.13 after a 125mg intravenous dose [A174457] .
Volume of distribution Erythromycin readily diffuses into the majority of body fluids and is found to accumulate in leucocytes [A174448], [F3322]. Only low concentrations are usually reached in the spinal fluid, however the passage of erythromycin throughthe blood-brain barrier increases in meningitis, likely due to the presence of inflamed tissues [F3322].
Route of elimination In patients with normal hepatic function, erythromycin is concentrated in the liver and excreted in the bile [F3322]. Less than 5% of the orally administered dose of erythromycin is excreted in active form in the urine [F3322]. A large proportion of the absorbed drug remains unaccounted for and is presumably metabolized, probably in the liver [F3322].
Protein binding 93% serum protein binding (erythromycin propionate) [A174454].
Half life 3.5 h [A174451] In patients with liver disease, the half-life has been shown to be significantly increased, however, this is of little clinical significance [F3322].
Absorption Orally administered erythromycin stearate is readily and reliably absorbed. Optimal serum levels of erythromycin are reached when it is taken in the fasting state or immediately before meals [F3322]. Erythromycin is well known for its highly variable bioavailability (18-45%) [A174451] after oral ingestion and its susceptibility to be degraded under acidic conditions [A174448].
Trade names Eryc, Erythrocin
Description antibiotic

D

J

S

S01AA17 Erythromycin


[S01AA] Antibiotics


[S01A] ANTIINFECTIVES


[S01] OPHTHALMOLOGICALS


[S] Sensory organs


J01FA01 Erythromycin


[J01FA] Macrolides


[J01F] MACROLIDES, LINCOSAMIDES AND STREPTOGRAMINS


[J01] ANTIBACTERIALS FOR SYSTEMIC USE


[J] Antiinfectives for systemic use


D10AF52 Erythromycin, combinations


[D10AF] Antiinfectives for treatment of acne


[D10A] ANTI-ACNE PREPARATIONS FOR TOPICAL USE


[D10] ANTI-ACNE PREPARATIONS


[D] Dermatological drugs


D10AF02 Erythromycin


[D10AF] Antiinfectives for treatment of acne


[D10A] ANTI-ACNE PREPARATIONS FOR TOPICAL USE


[D10] ANTI-ACNE PREPARATIONS


[D] Dermatological drugs


Toxicity Dose Time Species Model Method Action Positive criterion Reference
MEGAMITOCHONDRIA 200 µg/ml 22 h primary culture rat hepatocytes, RL-34,COS-1, IAR-20 induce 292


  • DrugBank DB00199
    CAS Number 114-07-8
    PubChem Compound 12560