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Drug Interactions between Biocef and trospium

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

cephalexin trospium

Applies to: Biocef (cephalexin) and trospium

MONITOR: Theoretically, coadministration of trospium chloride with other drugs that are eliminated by active tubular secretion may result in increased plasma concentrations of trospium and/or the coadministered drug(s). The mechanism is competitive inhibition of renal excretion. Drugs that are thought to undergo active tubular secretion include acyclovir/valacyclovir, cidofovir, cimetidine, digoxin, flecainide, ganciclovir/valganciclovir, metformin, midodrine, morphine, pancuronium, procainamide, quinidine, ranitidine, tenofovir, triamterene, and vancomycin.

MANAGEMENT: Patients receiving trospium chloride in combination with other drugs that undergo active tubular secretion should be monitored for excessive pharmacologic effects of one or both drugs, and the dosages of the drugs adjusted if necessary.

References (5)
  1. (2012) "Product Information. Sanctura (trospium)." Odyssey Pharmaceuticals
  2. (2024) "Product Information. Cobenfy (trospium-xanomeline)." Bristol-Myers Squibb
  3. (2019) "Product Information. Trosec (trospium)." Oryx Pharmaceuticals Inc
  4. (2022) "Product Information. Regurin (trospium)." Mylan Healthcare Sdn. Bhd.
  5. (2023) "Product Information. Trospium Chloride (trospium)." Padagis

Drug and food interactions

Moderate

trospium food

Applies to: trospium

ADJUST DOSING INTERVAL: Food may reduce the oral absorption and bioavailability of trospium chloride. According to the product labeling, administration of trospium chloride with a high fat meal reduced the peak plasma concentration (Cmax) and area under the concentration-time curve (AUC) by 70% to 80% compared to administration while fasting.

MANAGEMENT: To ensure maximal oral absorption, trospium chloride should be administered at least 1 hour before meals or on an empty stomach. If trospium chloride is administered as a combination with xanomeline, the manufacturer recommends administering the capsules at least 1 hour before a meal or at least 2 hours after a meal. Capsules should be taken whole.

References (7)
  1. (2012) "Product Information. Sanctura (trospium)." Odyssey Pharmaceuticals
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  3. Canadian Pharmacists Association (2006) e-CPS. http://www.pharmacists.ca/function/Subscriptions/ecps.cfm?link=eCPS_quikLink
  4. (2024) "Product Information. Cobenfy (trospium-xanomeline)." Bristol-Myers Squibb
  5. (2019) "Product Information. Trosec (trospium)." Oryx Pharmaceuticals Inc
  6. (2022) "Product Information. Regurin (trospium)." Mylan Healthcare Sdn. Bhd.
  7. (2023) "Product Information. Trospium Chloride (trospium)." Padagis
Moderate

cephalexin food

Applies to: Biocef (cephalexin)

ADJUST DOSING INTERVAL: Oral products containing zinc such as mineral supplements and multivitamins may interfere with the gastrointestinal absorption of cephalexin, ceftibuten or cephradine. In one pharmacokinetic study (n=12), concurrent administration of zinc sulfate (250 mg, single oral dose) and cephalexin (500 mg, single oral dose) decreased cephalexin maximum concentration (Cmax) and systemic exposure (AUC; 0-inf) by 31.05% and 27.4%, respectively. However, in the same study, when zinc sulfate was administered 3 hours after the cephalexin dose, no significant alteration in cephalexin pharmacokinetics were observed.

MANAGEMENT: Oral medications or mineral supplements that contain zinc are recommended to be administered at least 3 hours after the cephalexin, ceftibuten or cephradine dose.

References (3)
  1. Ding Y, Jia Y, Li F, et al. (2011) "The Effect of Staggered Administration of Zinc Sulfate on the Pharmacokinetics of Oral Cephalexin*" Br J Clin Pharmacol, 73, p. 422-7
  2. World Health Organization (2020) WHO Public Assessment Reports (WHOPARs) https://extranet.who.int/pqweb/medicines/prequalification-reports/whopars
  3. Okamura M, Terada t, KatsuraT, Saito H, Inui K (2003) "Inhibitory effect of zinc on PEPT1-mediated transport of glycylsarcosine and beta-lactam antibiotics in human intestinal cell line Caco-2" Pharm Res, 20, p. 1389-93

Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

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