acyclovir vs micafungin
Side-by-side comparison of acyclovir and micafungin Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Zovirax
Mycamine
Acyclovir is an antiviral medicine. It is used to treat infections caused by certain viruses.
Micafungin is an antifungal medicine. It treats certain Candida infections in adults and children.
Acyclovir is used to treat shingles, which is caused by herpes zoster. It also treats genital herpes, both the first time you have it and when it comes back. Acyclovir can also treat chickenpox.
Micafungin treats several types of Candida infections. These include infections in the blood, abdomen, and esophagus. It can also prevent Candida infections in stem cell transplant patients.
Acyclovir stops the virus from growing and spreading. It does this by interfering with the virus's ability to make copies of itself. This helps your body fight off the infection.
Micafungin stops the growth of Candida by blocking a key part of its cell wall. This weakens the fungus and allows your body to fight the infection. It targets a substance called 1,3-beta-D-glucan.
- • Malaise (feeling unwell)
- • Nausea
- • Diarrhea
- • Diarrhea
- • Nausea
- • Vomiting
- • Abdominal pain
- • Fever
- Tiredness 7,612
- Diarrhea 7,064
- Using the medicine for something it's not approved for 5,797
- Lung infection 5,474
- Feeling sick to your stomach 5,330
- The medicine is not working 985
- Using the medicine for a condition it is not approved for 542
- Fever 281
- Using the product for a condition it is not approved for 275
- Fever with low white blood cell count 258
Acyclovir can cause nervous system problems, especially in older adults or people with kidney problems. Tell your doctor if you have kidney problems before taking this medicine.
Micafungin can cause serious allergic reactions, including shock. Tell your doctor right away if you have hives, trouble breathing, or swelling. It can also cause liver problems. Your doctor will check your liver function during treatment.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if acyclovir will harm an unborn baby. Talk to your doctor about the risks and benefits of taking acyclovir while breastfeeding.
Micafungin may harm your unborn baby. Tell your doctor if you are pregnant or plan to become pregnant. It is not known if micafungin passes into breast milk. Talk to your doctor about the risks and benefits of breastfeeding.
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How to Read This acyclovir vs micafungin Comparison
acyclovir is classified in the Antiviral (Nucleoside Analog) drug class, while micafungin sits within the Echinocandin Antifungal 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, acyclovir has 31,277 submissions while micafungin has 2,341. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. 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 acyclovir and micafungin — 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.