Drug by Pharmacokinetics Flashcards
Penicillin V
po
renal excretion
Penicillin G
IM/IV
renal excretion
Penicillinase-Resistant (Methicillin)
po
renal exretion
Amoxicillin
po
renal excretion
Antipsuedomonal
IV only
renal excretion
Cephalexin
po
renal excretion
Cefuroxime
po
renal exretion
Cefdinir, Ceftiraxone
po
renal exretion
Vancomycin
poor oral absorption
renal excretion
carbapenems
IV
renal excretion
1 daily + Ertapenem
Macrolides
good oral, also IV
concentrates in lungs
Azithromycin
good oral, also IV (macrolides)
1 daily, biliary excretion
Doxycylcin
po
renal excretion
Minocyclin
po
biliary excretion
Lincomycins
good po (also IV)
Clindamycin
good po (also IV) penetrates into bone, hepatobiliary excretion
Aminoglycoside
poor oral absorption so IV/IM
accumulates in kidney/ear
extracellular fluid distribution
renal excretion
Chloramphenicol
good po (also IV)
metabolizes to CNS/CSF
metabolized by glucuronidation
Oxazolidinones
excellent po, also IV
eliminated by non-enzymatic oxidation and renal
Streptogamins
IV only
biliary excretion
Ciprofloxacin
good oral (also IV) renal excretion
Levofloxacin
good oral (also IV) renal excretion
Nitrofurantoin
good oral (also IV) rapid GI / kidney absorption so it acts as a urinary antiseptic
Metronidazole
good oral (also IV) hepatic metabolism
Sulfamethoxazole/Trimethoprim
good po (also IV) hepatic/renal elimation
Isoniazid
well absorbed orally
metabolized by acetylators
Rifampin
well absorbed orally
hepatobiliary excretion
Ethambutol
well absorbed orally
renal/fecal excretion
Pyrazinamide
well absorbed orally
hepatic metabolism
Streptomycin
IM
Amphotericin
IV or topical only
slow excretion by kidney/hepatobiliary
Nystatin
topical only
Caspofungin
IV infusion only
down levels with P450 inducers
Fluconazole
po/IV
renal excretion
enters CNS
Terbinafine
po and topical
metabolized by hepatic P450
Flucytosine
well absorbed/distributed
renally eliminated
Griseofulvin
poor po absorption, give with fatty meal
Acyclovir
topical, oral, IV formulations
renal excretion
Valacyclovir
renal excretion
Entecavir
oral absorption
slow renal excretion
Tenofovir
given as pro-drug
excreted by kidneys
Interferon-α
parenteral administration
renal elimination
Ribavirin
aerosol administration, good po long t(1/2)
Telaprevir, Boceprevir
oral absorption, best with food
Sufosbuvir
po w/ or w/out food
renal excretion after inactivation
Emtricitabine
orally
renal excretion
intracellular t(1/2) exceeds plasma t(1/2)
Efavirenz
good po
metabolized by/inhibits P450
Atazanavir
po
metabolized by P450 enzymes
DDI with CYP3A4
Darunavir
po
metabolized by P450 enzymes
DDI with CYP3A4
Ritonavir
po
metabolized by P450 enzymes
MOST POTENT CYP3A4 P450 inhibitor
Raltegravir
rapid oral absorption
eliminated by hepatic glucouronidation
Enfuvirtide
BID SC injection
elim by liver/kidney peptidases
Maraviroc
po
substrate for CYP3A4
fecal and renal excretion