Buy Zovirax
zovirax
$18.60
- Active ingredient: Acyclovir
- Category: Antivirals
- Delivery time: Airmail (14-21 days) | EMS trackable (5-9 days)
- Prescription: Included
- Availability: In Stock
Zovirax (Acyclovir) tablets are available to purchase from our Singapore pharmacy with reliable delivery. This nucleoside analogue antiviral works by inhibiting viral DNA replication, effectively stopping the herpes virus from multiplying and spreading to healthy cells. It helps manage outbreaks of cold sores, genital herpes, shingles, and chickenpox. Zovirax is an ideal solution for adults experiencing recurrent herpes infections who seek to reduce outbreak frequency and severity.
Table of contents
- Zovirax (Acyclovir) Buyer and Patient Handbook in Singapore
- What is Zovirax?
- Who Should Use Zovirax?
- How Does It Work?
- Why Choose Zovirax?
- Dosage, Administration, Lifestyle and Dietary Recommendations
- Recommended Dosage
- How to Take
- Missed Dose
- Overdose
- Special Populations
- Lifestyle & Diet
- Precautions and Warnings
- Drug Interactions
- Potential Side Effects
- Common Side Effects
- Less Common Side Effects
- Serious Side Effects
- Who Should Avoid This Medication?
- Storage Instructions
- Zovirax Alternatives
- Frequently Asked Questions
- How quickly will Zovirax relieve a cold sore?
- Can I take Zovirax while drinking coffee?
- Is it safe to take Zovirax with antihistamines?
- What should I do if I experience a rash after starting Zovirax?
- Can Zovirax prevent future herpes outbreaks?
- Does Zovirax affect birth control pills?
- How many tablets should I keep on hand for a typical outbreak?
- What is the difference between the 400 mg and 800 mg tablets?
- Can I take Zovirax if I have a mild kidney issue?
- Will Zovirax cure my herpes infection permanently?
- Glossary
- Disclaimer
- Zovirax Properties
- Zovirax Drug Class
- Zovirax Connected Conditions
- How to order Zovirax from our Online Pharmacy
- Reviews
- Write your review
Zovirax (Acyclovir) Buyer and Patient Handbook in Singapore
What is Zovirax?
Zovirax is an antiviral medication containing the active ingredient acyclovir, used to treat infections caused by the Herpes Simplex virus (HSV) and Varicella-Zoster virus (VZV). It is commonly prescribed for Cold Sores, Genital Herpes, and Shingles. Zovirax tablets are approved by the Singapore Health Sciences Authority (HSA) and meet international FDA/EMA quality standards. The product is available as oral tablets in strengths of 200 mg, 400 mg, and 800 mg.
Who Should Use Zovirax?
- Adults diagnosed with HSV-1 (cold sores) or HSV-2 (genital herpes) infections.
- Individuals experiencing shingles (Herpes Zoster) Pain and rash.
- Patients requiring antiviral prophylaxis after organ transplant or during Immunosuppression, as advised by a specialist.
- People who can swallow tablets whole and have no known contraindications listed below.
How Does It Work?
Acyclovir mimics the building blocks of viral DNA. When the virus attempts to replicate, acyclovir is incorporated into the viral DNA chain, causing premature termination and halting virus production. This selective action reduces viral load, eases symptoms, and speeds healing. Because human cells lack the viral enzyme needed to activate acyclovir, the drug has minimal effect on normal tissues.
Why Choose Zovirax?
- Proven efficacy: Decades of clinical data confirm its ability to shorten outbreak duration and lessen pain.
- Convenient oral dosing: Tablet form avoids the discomfort of intravenous therapy for most indications.
- Cost-effective: Compared with newer branded antivirals, Zovirax offers a lower price while delivering comparable outcomes for standard HSV/VZV infections.
- Off-label uses (e.g., herpes-associated erythema multiforme) should only be considered after professional consultation.
Dosage, Administration, Lifestyle and Dietary Recommendations
Recommended Dosage
- Cold sores (HSV-1): 200 mg five times daily for 5 days, or 400 mg three times daily for 5 days.
- Genital herpes (HSV-2): 400 mg twice daily for 7-10 days (first episode) or 400 mg twice daily for 5 days (recurrences).
- Shingles: 800 mg five times daily for 7 days.
How to Take
- Swallow the tablet whole with a full glass of water.
- Take doses at evenly spaced intervals (e.g., every 4-6 hours).
- Food does not significantly affect absorption; you may take with or without meals.
Missed Dose
If you miss a dose, take it as soon as you remember unless it is within 2 hours of the next scheduled dose. In that case, skip the missed dose and continue with your regular schedule-do not double-dose.
Overdose
Symptoms may include Nausea, Vomiting, dizziness, or headache. Seek immediate medical attention or contact the Singapore Poisons Centre (180-222-5555). Prompt treatment reduces the risk of renal complications.
Special Populations
- Elderly (>65 years): No dose adjustment required, but monitor renal function.
- Renal impairment: Reduce dose proportionally; for creatinine clearance <30 mL/min, use 200 mg three times daily for HSV infections.
- Pregnancy & breastfeeding: Generally considered safe (Category B2), but discuss with a healthcare professional before starting.
- Children: Not covered in this handbook; pediatric dosing must be prescribed separately.
Lifestyle & Diet
- Hydration: Drink plenty of fluids to support kidney clearance.
- Alcohol: Moderate consumption is acceptable; excessive intake may increase renal load.
- Grapefruit juice: No known interaction, but maintain consistent dietary habits to avoid confusion.
Precautions and Warnings
- Verify you are not allergic to acyclovir or any tablet excipients.
- Use caution if you have a history of kidney disease; regular blood tests may be advised.
- Discontinue use and consult a clinician if you develop a severe rash, fever, or signs of allergic reaction (e.g., swelling, difficulty breathing).
Drug Interactions
| Drug Class | Risk | Action |
|---|---|---|
| Probenecid | ↑ Acyclovir levels | Monitor renal function; adjust dose |
| Cimetidine | ↑ Acyclovir absorption | Observe for increased side effects |
| Mycophenolate mofetil | ↑ nephrotoxicity risk | Check renal labs regularly |
Potential Side Effects
Common Side Effects
- Headache
- Nausea or mild stomach upset
- Diarrhea
Less Common Side Effects
- Dizziness
- Fatigue
- Mild skin rash
Serious Side Effects
- Acute kidney injury: Reduced urine output, swelling, or unexplained weight gain. Seek urgent care.
- Severe cutaneous reactions: Stevens-Johnson syndrome or toxic epidermal necrolysis. Discontinue and call emergency services.
- Neurological symptoms: Confusion, hallucinations, or Seizures, especially in patients with renal impairment.
Who Should Avoid This Medication?
- Individuals with known hypersensitivity to acyclovir or any component of the tablet.
- Patients with severe renal dysfunction (creatinine clearance <10 mL/min) unless dose-adjusted under specialist supervision.
- Those currently taking other nucleoside analogues without medical oversight due to additive toxicity risk.
Storage Instructions
- Keep tablets in the original container, tightly closed.
- Store at room temperature (15-30 °C); avoid excess heat and moisture.
- Keep out of reach of children and pets.
Zovirax Alternatives
| Name | Class | Key Difference |
|---|---|---|
| Valacyclovir | Antiviral | Better bioavailability; once-daily dosing |
| Famciclovir | Antiviral | Similar efficacy; higher cost |
| Generic Acyclovir | Antiviral | Identical active ingredient; lower price |
Frequently Asked Questions
How quickly will Zovirax relieve a cold sore?
Most users notice reduced pain and swelling within 24-48 hours; the sore often heals faster than without treatment.
Can I take Zovirax while drinking coffee?
Yes, caffeine does not interfere with acyclovir’s absorption or activity.
Is it safe to take Zovirax with antihistamines?
Generally safe; no significant interaction has been reported.
What should I do if I experience a rash after starting Zovirax?
Stop the medication and seek medical evaluation promptly, as it could signal an allergic reaction.
Can Zovirax prevent future herpes outbreaks?
It can be used as suppressive therapy (e.g., 400 mg daily) for frequent recurrences, but long-term use should be discussed with a clinician.
Does Zovirax affect birth control pills?
No, acyclovir does not reduce the effectiveness of hormonal contraceptives.
How many tablets should I keep on hand for a typical outbreak?
For a standard 5-day cold-sore regimen at 200 mg five times daily, you need 25 tablets.
What is the difference between the 400 mg and 800 mg tablets?
They contain double the amount of acyclovir; the higher dose is reserved for severe infections like shingles.
Can I take Zovirax if I have a mild kidney issue?
A dose reduction is usually required; consult a healthcare professional for individualized guidance.
Will Zovirax cure my herpes infection permanently?
Acyclovir controls viral replication and reduces symptoms but does not eradicate the virus from the body.
Glossary
- Antiviral: A drug that inhibits the development or replication of viruses.
- Bioavailability: The proportion of a drug that enters circulation and can have an active effect.
- Renal clearance: The kidney’s ability to remove a substance from the blood.
Disclaimer
This handbook provides general medical information about Zovirax (acyclovir) for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Off-label uses should be discussed with a qualified healthcare provider. Our online pharmacy offers direct access to the medication, but it is the user's responsibility to verify suitability, follow local regulations, and consult a clinician before initiating therapy.
Zovirax Properties
- Original Manufacturer: GlaxoSmithKline
- Clinical use: Antiviral treatment for herpes infections
- Spectrum of activity: Narrow-spectrum antiviral
- Mechanism of action: Inhibits viral DNA replication
- Classification: Antiviral drug
- Recommended Dosage: 200-800 mg 5 times daily, depending on condition
- Basic Side Effects: Headache, Nausea, Vomiting
- Moderate Side Effects: Skin rash, Fatigue
- Serious Side Effects: Severe allergic reactions, Renal impairment
Zovirax Drug Class
Zovirax Connected Conditions
How to order Zovirax from our Online Pharmacy
To order Zovirax | Acyclovir on our online pharmacy, all you need to do is select the required dosage and quantity of pills above. The cost of the selected pack will appear automatically. Next, add the chosen amount to your cart by clicking the Add to Cart button. You can either continue shopping for more medications or head to the checkout. At the Checkout, finalize your purchase through our secure payment gateway.
Zovirax / Acyclovir pills are made using high-quality generic ingredients and are subject to strict quality control in line with WHO and Health Sciences Authority (HSA) standards. However, please note that Zovirax pills are dispatched from outside Singapore due to prescriptions issued overseas.
Disclaimer: The content on this website is provided solely for informational purposes and is not intended to replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions or concerns regarding your health, and never disregard or delay seeking professional advice based on the information presented here. Use of this website does not create a doctor-patient relationship, and in the event of a medical emergency, please contact your local emergency services immediately. Our website assumes no responsibility or liability for any errors or omissions in the content provided.
Reviews
First time taking the 800mg dose for a bad shingles outbreak. It worked fast, seriously diminishing the nerve pain within two days, but the nausea is intense. I feel like I constantly have a stomach flu. User hack: A friend suggested taking it right after a fatty meal, like nasi lemak. That helped curb the gut issues a bit. Still, great relief from the constant burning.
Been on 400mg twice daily suppressive therapy for years. It stops the outbreaks completely... almost. The tradeoff is real: I get these constant, low-grade tension headaches, especially if I skip a glass of water. It's frustrating. Best hack I learned: If you feel an outbreak starting (that faint tingle), double your dose for 24 hours immediately. It usually knocks it out before the blisters even form.
I started Zovirax 200mg for recurrent cold sores. It definitely shortens the healing time from two weeks to maybe four days if I catch it early. I noticed major brain fog though. Seriously struggling to focus at work; it feels like my memory is worse. Is anyone else getting that metallic taste in their mouth? The side effects are almost as annoying as the cold sore itself.
It works perfectly for my ocular issues, keeping the infections away for months now. Zero side effects on my eyes, which is fantastic. HOWEVER, it makes my skin unbelievably dry. Like, I have to moisturize three times a day or my arms look scaly. I cut back on coffee which seemed to intensify the dryness, and that helps minimally. It's a reliable drug, just prepare for desert-level dryness.
I've been using Acyclovir on and off for over a decade. The best strategy? Buy the higher 800mg dose, and when you feel the tiniest tingle, you break it in half. Take 400mg, then 400mg six hours later, and it usually stops it dead. It saves money and works quicker than the lower dosages. Key warning: Do not skip sleep. When I'm underslept, the meds seem way less effective.
Started the 800mg 5x daily course. Immediate regret. It fried my stomach lining, and I developed full-blown diarrhea. Had to switch to the cream/topical because the oral pills were just too much for my system. I guess I have a sensitive digestive tract. It technically did reduce the outbreak duration, but I felt sick and dehydrated the whole time.
I take it mostly preventative when I travel or know I'll be stressed. It's extremely reliable-never had a breakout in months when I keep it up. My hack is to make sure I take the pill with at least two full glasses of water, not just a sip. Proper hydration minimizes the "brain fog" feeling, which for me, is the worst side effect. It's manageable if you drown yourself in H2O.
Suppressive therapy (400mg). It has cleared my skin amazingly, which is the huge win. But I developed minor tremors in my hands after about six months on it. Not enough to stop using it, but definitely noticeable when I try to write or pour coffee. My doctor said it's a known, uncommon side effect. I just try to take my second dose earlier in the evening to sleep through the peak side effects.