Drug General Information (ID: DDIBC9LX0N)
Drug Name			Furosemide		Drug Info		Cefprozil		Drug Info
Drug Type		Small molecule				Small molecule
Therapeutic Class		Diuretics				Antibiotics
Structure

Mechanism of Furosemide-Cefprozil Interaction (Severity Level: Moderate)
Increased renal excretion (Unspecific) Click to Show/Hide Mechanism Graph
Drug Name		Furosemide				Cefprozil
Mechanism		Increase the risk of cephalosporins-induced nephrotoxicity				Cephalosporins
Key Mechanism Factor 1
		Factor Name		Pharmacokinetics
		Factor Description		Alters the excretion of the drug, resulting in changes in the plasma concentration of the drug and affecting the pharmacological effects.
Mechanism Description		Increased renal excretion of Cefprozil caused by Furosemide

Recommended Action
Management		Although data are primarily limited to cephaloridine, which is no longer commercially marketed, caution may be advisable in patients receiving a loop diuretic in combination with other cephalosporins. Renal function should be monitored, particularly when high dosages are used or when these medications are administered in the elderly or patients with preexisting renal impairment.

References
1	Chrysos G, Gargalianos P, Lelekis M, Stefanou J, Kosmidis J "Pharmacokinetic interactions of ceftazidime and frusemide." J Chemother 7 Suppl (1995): 107-10. [PMID: 8904125]
2	Dodds MG, Foord RD "Enhancement by potent diuretics of renal tubular necrosis induced by cephaloridine." Br J Pharmacol 40 (1970): 227-36. [PMID: 5492895]
3	Korn A, Eichler HG, Gasic S "A drug interaction study of ceftriaxone and frusemide in healthy volunteers." Int J Clin Pharmacol Ther Toxicol 24 (1986): 262-4. [PMID: 3733274]
4	Lawson DH, Macadam RF, Singh H, et al "Effect of furosemide on antibiotic-induced renal damage in rats." J Infect Dis 126 (1972): 593-600. [PMID: 4664116]
5	Norrby R, Stenqvist K, Elgefors B "Interaction between cephaloridine and furosemide in man." Scand J Infect Dis 8 (1976): 209-12. [PMID: 968459]
6	Simpson IJ "Nephrotoxicity and acute renal failure associated with cephalothin and cephaloridine." N Z Med J 74 (1971): 312-5. [PMID: 5289757]
7	Tilstone WJ, Semple PF, Lawson DH, Boyle JA "Effects of furosemide on glomerular filtration rate and clearance of practolol, digoxin, cephaloridine, and gentamicin." Clin Pharmacol Ther 22 (1977): 389-94. [PMID: 902451]
8	Trollfors B, Norrby R, Kristianson K, Nilsson NJ "Effects on renal function of treatment with cefoxitin alone or in combination with furosemide." Scand J Infect Dis 13 (1978): 73-7. [PMID: 356182]