Trying to find cheap generic Zovirax without breaking the bank can feel like navigating a maze of ads, dubious sites, and confusing medical jargon. You need a clear roadmap that tells you what the drug actually is, when you really need it, how to get it legally in the UK, and how to spot the scams that threaten your health and wallet.
Key Takeaways
- Zovirax is the brand name for the antiviral valacyclovir, which treats cold sores, genital herpes and shingles.
- The generic version costs roughly 30‑70% less than the brand, but price can vary widely between online pharmacies.
- UK law requires a valid prescription for any oral antiviral, even when bought from a licensed online pharmacy.
- Check for MHRA registration, clear contact details, and a pharmacist‑reviewed prescription before you click ‘Buy’.
- Watch out for no‑prescription offers, unusually low prices, and websites that don’t display a physical address.
What is Zovirax and Its Generic Counterpart?
When you search for Zovirax is a brand‑name antiviral tablet containing 500mg of valacyclovir, approved to treat herpes‑related infections. The active ingredient, valacyclovir, works by slowing the replication of the Herpes Simplex Virus (HSV) and the varicella‑zoster virus that causes shingles.
The generic version is chemically identical to Zovirax but sold under the name “valacyclovir tablets” by various manufacturers. Because the research and development costs have already been covered by the brand, generic manufacturers can offer the same dosage at a lower price.
When Do Doctors Recommend Valacyclovir?
Valacyclovir is prescribed for three main conditions:
- Cold sores (oral HSV‑1 lesions) - usually a 1‑day course of 2g.
- Genital herpes outbreaks - 500mg twice daily for 5‑10days, or suppressive therapy (1g daily).
- Shingles (herpes zoster) - 1g three times a day for 7days to reduce pain and post‑herpetic neuralgia.
Doctors also use valacyclovir for viral meningitis and as prophylaxis before organ transplants, but those scenarios involve specialist dosing.
How to Order Valacyclovir Legally Online in the UK
The UK treats any oral antiviral as a prescription‑only medicine (POM). That means you can’t simply add it to a shopping cart without a valid prescription from a registered prescriber.
Here’s the legal pathway:
- Consult a GP, sexual health clinic, or a registered tele‑health service that can issue a prescription after a brief medical review.
- The prescriber sends the prescription electronically to a licensed online pharmacy that holds a UK Medicines and Healthcare products Regulatory Agency (MHRA) registration.
- The pharmacy verifies your details, double‑checks the prescription, and ships the medication to your address.
Many reputable UK pharmacies now offer a quick video or chat consultation, letting you get a prescription without leaving home. The NHS also provides a free online repeat prescription service for patients already on valacyclovir.

Price Comparison: Brand vs. Generic
Below is a snapshot of typical UK prices (October2025). Prices fluctuate with bulk ordering, discounts, and regional taxes.
Product | Strength | Pack Size | Average Price (GBP) | Price per Tablet |
---|---|---|---|---|
Zovirax | 500mg | 28 tablets | £70.00 | £2.50 |
Generic Valacyclovir (Manufacturer A) | 500mg | 28 tablets | £38.00 | £1.36 |
Generic Valacyclovir (Manufacturer B) | 500mg | 56 tablets | £72.00 | £1.29 |
Generic Valacyclovir (Online Discount Store) | 500mg | 28 tablets | £30.00 | £1.07 |
Even the cheapest legitimate online source still charges a bit more than the NHS prescription price, but the savings compared with the brand are clear.
How to Spot a Reputable Online Pharmacy
Before you type in your credit‑card details, run through this quick checklist:
- MHRA registration number. Legitimate pharmacies display a UK registration number (e.g., “MHRA‑12345”).
- Clear pharmacist contact. Look for a name, qualification (MPharm) and a direct phone line.
- Prescription requirement. Any site offering valacyclovir without asking for a prescription is illegal.
- Secure website. URL should start with “https://” and show a padlock icon.
- Transparent pricing. No hidden fees; shipping costs should be listed upfront.
- Return & refund policy. Legit pharmacies let you return unopened medication.
Credible UK pharmacies include Boots.com, LloydsPharmacy, and the NHS e‑prescribing portal. Smaller discount sites can also be safe if they display the MHRA number and a real pharmacist’s credentials.
Common Pitfalls & Scams to Avoid
Scammers target the demand for cheap antivirals with three main tricks:
- No‑prescription offers. If a site says “Buy Zovirax without a doctor”, that’s a red flag.
- Unrealistically low prices. Prices under £15 for a 28‑tablet pack usually mean counterfeit pills.
- Hidden international shipping. Some sites ship from outside the EU, bypassing MHRA oversight and risking customs seizure.
Take a moment to search the pharmacy name on the UK Medicines and Healthcare products Regulatory Agency (MHRA) website. If the name isn’t listed, walk away.

Placing Your Order Safely
- Obtain a prescription via your GP or a registered tele‑health service.
- Choose a pharmacy that meets the checklist above.
- Enter the prescription code, your delivery address, and double‑check the medication details (valacyclovir 500mg).
- Pay using a secure method (credit card, PayPal, or NHS prescription credit). Avoid wire transfers.
- When the package arrives, verify the label matches your order and check the expiry date.
- Store tablets in a cool, dry place out of direct sunlight; keep them out of reach of children.
If you notice any discoloration, odd smell, or missing tablet count, contact the pharmacy immediately and request a replacement.
Quick Checklist Before You Click ‘Buy’
- Do you have a valid prescription?
- Is the pharmacy MHRA‑registered?
- Does the site require a pharmacist to review the prescription?
- Are the prices in line with the comparison table (≈£30‑£40 for 28 tablets)?
- Is the website connection secure (https://)?
- Do you see a clear return policy?
Frequently Asked Questions
Can I buy generic valacyclovir without a prescription in the UK?
No. Valacyclovir is a prescription‑only medication in the UK. Any reputable online pharmacy will ask for a valid prescription before dispensing.
How much should a 28‑tablet pack of generic valacyclovir cost?
Legitimate UK sources charge between £30 and £40 for a 500mg, 28‑tablet pack. Prices significantly lower than this usually indicate counterfeit or unregulated products.
Is it safe to import Zovirax from overseas?
Importing without a UK‑registered pharmacy bypasses MHRA safety checks. You risk receiving sub‑standard medication, customs seizure, or legal penalties.
Can the NHS provide free valacyclovir?
If your GP deems it medically necessary, the NHS can prescribe valacyclovir at no charge, but you still need a prescription to obtain it from an NHS pharmacy.
What are the signs of a counterfeit antiviral?
Common clues include unusually low price, misspelled brand names, no batch number, irregular tablet shape or color, and lack of a professional pharmacy address.