Drug interactions between Cotrim and ganciclovir
| Results for the following 2 drugs: |
|---|
| Cotrim (sulfamethoxazole/trimethoprim) |
| ganciclovir |
Interactions between your selected drugs
ganciclovir ↔ trimethoprim
Applies to:ganciclovir and Cotrim (sulfamethoxazole/trimethoprim)
The coadministration of ganciclovir or its prodrug, valganciclovir, with trimethoprim may result in elevated plasma concentrations of ganciclovir. In 12 subjects with HIV and CMV coinfection, trimethoprim (200 mg orally once a day) increased the half-life of ganciclovir (1000 mg orally every 8 hours) by an average of 15% and decreased its renal clearance by 16%. The mechanism is unknown but may involve the competitive inhibition of ganciclovir renal tubular secretion by trimethoprim. Ganciclovir had minimal effect on the pharmacokinetics of trimethoprim. This interaction is unlikely to be of clinical significance.
See also...
Drug Interaction Classification
The classifications below are a guideline only. The relevance of a particular drug interaction to a specific patient is difficult to determine using this tool alone given the large number of variables that may apply.
| 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. |
Do not stop taking any medications without consulting your healthcare provider.
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