Updated: January 18, 2026
Zovirax Shortage Update: What Patients Need to Know in 2026
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Peter Daggett
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Claude
Gemini
Overview
The Zovirax (acyclovir) shortage is ongoing for IV forms in 2026. Get the latest update on availability, pricing, and what to do if you can't find it.
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The acyclovir (Zovirax) supply situation in 2026 is a tale of two medications: oral acyclovir tablets and capsules are broadly available, while the injectable (IV) form continues to face intermittent shortages. Here's the full picture of where things stand right now and what it means for you.
Current Status: What's in Shortage and What Isn't
Oral acyclovir (tablets, capsules, suspension): Generally available at most pharmacies. Individual locations may temporarily run out due to uneven distribution and demand spikes. Spot shortages typically resolve within days to weeks.
IV acyclovir injection: Active intermittent shortage. The ASHP (American Society of Health-System Pharmacists) has listed acyclovir injection on its drug shortage database continuously since 2020. As of April 2026, at least one supplier (Slate Run Pharma) reports its 10 mL vials on backorder with no estimated release date.
Topical forms (cream, ointment): Generally available, though brand Zovirax cream is expensive ($400+ without insurance). Generic acyclovir cream is a much more affordable alternative.
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How Did We Get Here? A Year-by-Year Timeline
2020–2021: Injectable acyclovir begins experiencing shortages. Manufacturing constraints combined with increased demand during the pandemic led to the FDA and ASHP listing acyclovir injection on official shortage databases.
2022–2023: IV acyclovir shortages deepen. Some hospitals ration supplies or switch patients to oral alternatives when clinically appropriate. Oral formulations remain mostly stable but begin seeing regional disruptions.
2024: Improvement begins. By late 2024, ASHP reports Fresenius Kabi's acyclovir sodium injection (50 mg/mL, 20 mL vials) returned to full availability. GlaxoSmithKline increases production of 400 mg and 800 mg oral tablets. The 200 mg capsule was the last oral formulation to stabilize.
2025–2026: The situation is described as "stable but fragile." Oral acyclovir is generally accessible. IV acyclovir continues to experience intermittent shortages, and generic manufacturer consolidation means one disruption can destabilize supply quickly.
What Does This Mean for You as a Patient?
If you take oral acyclovir for genital herpes, shingles, or chickenpox, the 2026 supply situation shouldn't significantly impact your care. Most pharmacies have it in stock. You may need to call around if your usual pharmacy is temporarily out, but this is the exception rather than the rule.
If you or a family member needs IV acyclovir for a serious infection like HSV encephalitis or neonatal herpes, be aware that your hospital's pharmacy team may need to source from alternative suppliers. This is an institutional issue, not something you can resolve at a retail pharmacy.
How Much Does Zovirax Cost in 2026?
Pricing has remained relatively stable for generic acyclovir. Here's what you can expect (see our full guide to saving money on Zovirax for more):
Without insurance or coupon: $15–$105 for a 30- to 60-count supply of generic acyclovir 400 mg tablets, depending on pharmacy.
With GoodRx or SingleCare coupon: As low as $8–$15 for 60 tablets of acyclovir 400 mg.
With insurance: Typically $0–$20 copay; generic acyclovir is Tier 1 (preferred generic) on most plans.
Brand Zovirax cream: $400+ without insurance. Always ask for the generic version — it contains the same active ingredient at a fraction of the price.
What Should You Do Right Now?
Refill your prescription 5–7 days early to avoid running out if your usual pharmacy is temporarily stocked out.
Ask your doctor for a 90-day supply if you're on long-term suppressive therapy. This reduces the frequency of refill trips.
Use medfinder if you need to find which pharmacies near you currently have stock.
Talk to your doctor about valacyclovir as a backup option if acyclovir is unavailable. It treats the same conditions and is often easier to find.
Don't stockpile — keep a consistent refill schedule instead. Stockpiling can worsen shortages for other patients.
The Bottom Line for Patients in 2026
Oral acyclovir is generally available in 2026, but staying ahead of your refills and knowing your alternatives is important given the fragile supply environment. If you're ever having trouble locating your medication, medfinder can help you find pharmacies near you that have it in stock.
Frequently Asked Questions
Yes, but it's limited to the injectable (IV) form. IV acyclovir has experienced intermittent shortages since 2020 and continues to face supply fluctuations in 2026, with at least one supplier reporting backorder as of April 2026. Oral acyclovir tablets, capsules, and topical forms are generally available at most retail pharmacies.
If you take oral acyclovir (tablets or capsules), shortages are unlikely to significantly impact you. Individual pharmacies may occasionally be out of stock, but this is usually resolved by trying another pharmacy or asking for a special order. The IV shortage primarily affects hospital settings.
Injectable medications require sterile manufacturing facilities with strict quality controls, which are expensive and complex to maintain. Low margins on generic injectables reduce manufacturers' financial incentive to expand capacity. Oral tablets are easier and cheaper to manufacture, so supply is more stable even when demand increases.
No. Insurance companies and pharmacies typically limit prescriptions to a 30- or 90-day supply, and stockpiling is not recommended because it can worsen shortages for other patients. Instead, keep a consistent refill schedule and request refills 5–7 days before running out. Ask your doctor for a 90-day supply if you're on long-term therapy.
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