ganciclovir vs trimethoprim
Side-by-side comparison of ganciclovir and trimethoprim. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
Other drugs associated with myelosuppression or nephrotoxicity (e.g., dapsone, doxorubicin, flucytosine, hydroxyurea, pentamidine, tacrolimus, trimethoprim/ sulfamethoxazole, vinblastine, vincristine and zidovudine) Unknown Because of potential for higher toxicity, coadministration with Ganciclovir Injection should be considered only if the potential benefits are judged to outweigh the risks.
Recommendation: Use this combination only if your doctor decides the benefits are worth the risks. Your doctor will need to check your blood and kidney health often.
Cytovene
Primsol
Ganciclovir injection is an antiviral medicine. It helps treat and prevent cytomegalovirus (CMV) infections.
This medicine contains sulfamethoxazole and trimethoprim. It is an antibiotic that fights bacteria in your body.
This medicine treats CMV retinitis, an eye infection, in people with weak immune systems, including those with AIDS. It also prevents CMV disease in adults who have had organ transplants and are at risk for CMV.
This medicine can treat urinary tract infections, ear infections in children, and bronchitis in adults. It also treats shigellosis, a type of diarrhea. It can also treat or prevent Pneumocystis jiroveci pneumonia, and treat traveler's diarrhea.
Ganciclovir stops CMV from multiplying. It does this by blocking a key enzyme the virus needs to make copies of itself. This helps your body fight off the CMV infection.
This medicine works by stopping bacteria from making folic acid. Bacteria need folic acid to grow and multiply. By blocking folic acid production, the medicine kills the bacteria.
- • Fever
- • Diarrhea
- • Low white blood cell count
- • Nausea
- • Anemia (low red blood cell count)
- • Nausea
- • Vomiting
- • Loss of appetite
- • Skin rash
- • Hives
- CMV infection 1,170
- The virus is not responding to the medicine 653
- Fever 590
- Low count of a type of white blood cell 503
- Low count of all types of blood cells 503
- Nausea 945
- Diarrhoea 848
- Headache 835
- Malaise 815
- Pyrexia 721
This drug can cause serious side effects. It can lower blood cell counts, possibly leading to severe infections or bleeding. It may also harm fertility in both men and women. Ganciclovir can cause birth defects and may increase your risk of cancer. Talk to your doctor about these risks.
Rarely, sulfonamide drugs like this one have caused severe reactions. These include Stevens-Johnson syndrome, toxic epidermal necrolysis, liver damage, and blood problems. Tell your doctor right away if you have a fever, rash, blisters, mouth sores, or signs of infection.
Ganciclovir can harm your unborn baby. Do not get pregnant while taking this medicine. Talk to your doctor about birth control. Breastfeeding is not recommended while using this medicine.
Tell your doctor if you are pregnant or plan to become pregnant. This medicine may not be safe for your baby. Talk to your doctor about the risks and benefits of taking this medicine while breastfeeding.
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How to Read This ganciclovir vs trimethoprim Comparison
ganciclovir is classified in the Antiviral (Nucleoside Analog) drug class, while trimethoprim sits within the Dihydrofolate Reductase Inhibitor class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, ganciclovir has 3,419 submissions while trimethoprim has 4,164. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to both medications can be hard on the kidneys and may lower your blood cell counts. using them at the same time increases the chance of these serious side effects.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between ganciclovir and trimethoprim - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.