Acivir 800mg
Available Dosages
| Description |
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|---|---|
| SKU | 12 |
| Generic For | Zovirax |
| Strength | 800mg |
| Active Ingredient | Acyclovir |
| Pack Size | Qty | Price Per Pill or Unit | Price | Cart | |
|---|---|---|---|---|---|
| 30 Tablet/s | US$ 0.87 | US$ 25.98 | |||
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| 60 Tablet/s | US$ 0.87 | US$ 51.98 | |||
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| 90 Tablet/s | US$ 0.87 | US$ 77.97 | |||
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Acivir 800mg – Affordable Zovirax Alternative for Herpes & Chickenpox
Acivir 800mg is an antiviral medication that contains Acyclovir, a well-established active ingredient used for controlling infections linked to herpes viruses. It is designed to help manage viral conditions by interfering with the process that allows viruses to reproduce and spread within the body. By reducing the virus's ability to multiply, this medicine supports the body's natural defence system in controlling symptoms and improving recovery. Acivir is commonly prescribed for infections such as herpes simplex, genital herpes, cold sores, shingles, and chickenpox in specific situations where antiviral treatment is considered necessary.
The 800mg formulation provides a higher amount of Acyclovir; the doctor recommends it depending on the type of infection and the patient's medical requirements.
Manufacturing details - Acivir 800mg is manufactured by Cipla Limited, one of India's leading pharmaceutical companies known for developing and supplying a wide range of healthcare products across various therapeutic categories.
Working of the active component Acyclovir
Acyclovir, the active ingredient in Acivir 800mg, is an antiviral medicine that helps slow the growth and spread of herpes viruses inside the body. After the tablet is absorbed, the medicine becomes active mainly within virus-infected cells.
After entering the body, Acyclovir is activated inside virus-infected cells and works by blocking an important viral enzyme involved in the formation of viral genetic material. This prevents the virus from efficiently making new copies, helping reduce the severity of outbreaks and limiting further progression of infection. Acivir 800mg is most effective when taken at the beginning stages of an outbreak. Early signs such as discomfort, irritation, tingling, or blister formation may indicate the onset of viral activity, and timely treatment may help improve symptom control. Although this medicine helps manage herpes-related conditions, it does not eliminate the virus from the body. The use of Acivir 800mg should always be based on professional medical advice. Following the recommended schedule, completing the prescribed duration, and maintaining healthy fluid intake can support safe and effective treatment. This medication is widely recognised for its selective antiviral activity and ability to help individuals manage recurrent or active herpesvirus infections more comfortably.
Difference between Zovirax brand and Acivir generic
Zovirax and Acivir contain the same active ingredient, Acyclovir, and provide comparable antiviral effectiveness when used as prescribed. The primary differences are the manufacturer, brand name, appearance, and price. Acivir is the generic version and is generally available at a lower cost. Acivir 400 mg can be sourced from the HIV & Herpes category.
Buy Acivir 800mg
Purchasing Acivir 800mg online from PremiumRxDrugs offers a convenient way to access this antiviral medication from the comfort of your home. Choosing PremiumRxDrugs for Acivir 800mg may offer benefits such as easy online ordering, access to product information, and doorstep delivery. Always ensure that the medicine is taken responsibly and only as recommended by a qualified medical professional. The website offers Acivir 400mg along with Acivir Cream for topical use.
Important Considerations for Using Acyclovir
Before starting Acivir 800mg or Zovirax, discuss your medical history with your doctor, particularly if you have kidney problems, reduced immunity, or any condition that may influence how your body handles medicines. People with kidney concerns may require special dosage instructions.
Maintain proper hydration during treatment unless your doctor has advised fluid restriction. Insufficient fluid intake may increase the risk of unwanted effects in certain individuals. Inform your healthcare provider about all medications, herbal products, and supplements you are using. Some medicines may affect how acyclovir is processed and may require monitoring or adjustment. Acivir 800mg should be used with caution in older adults, as age-related changes in kidney function may affect the medication's elimination.
Pregnant or breastfeeding individuals should seek medical advice before using this medicine to understand possible benefits and considerations. This treatment helps control viral activity but does not completely remove herpes viruses from the body. People with active infections should take suitable precautions to reduce the chance of passing the infection to others. Do not begin, stop, or alter the dose of Acivir 800mg without consulting a healthcare professional. Proper guidance helps ensure safer and more appropriate use of the medication.
Possible effects of Acyclovir
Acivir 800mg may cause unwanted effects in some users, although many people tolerate it well. Common reactions can include headache, nausea, stomach discomfort, diarrhoea, vomiting, dizziness, or fatigue. These effects are generally temporary and may decrease as the body becomes accustomed to the medication. Some individuals may notice mild skin-related symptoms such as itching or a rash. Inform your doctor if these reactions continue or become uncomfortable. Rarely, more serious effects may occur, including unusual confusion, extreme weakness, changes in urination, or symptoms of an allergic response such as facial swelling or difficulty breathing. These situations require immediate medical attention. If any unusual symptoms develop during treatment, medical advice should be obtained promptly. Avoid stopping the medicine suddenly unless instructed by a healthcare provider, as completing the recommended treatment plan is important for proper infection management.
Instructions for using Acyclovir
Acivir 800mg or Zovirax should be used according to the instructions provided by your healthcare provider. The treatment plan may differ from person to person depending on the infection being treated, the severity of symptoms, and overall health condition. Take the tablet with sufficient water and follow the prescribed timing carefully. Try to take each dose at the same time every day to maintain consistent medicine levels in the body. This helps the antiviral activity continue effectively throughout the treatment period. The tablet should be swallowed properly and should not be modified unless advised by a medical professional. If you miss a scheduled dose, take it as soon as you remember. However, if the next dose is approaching, skip the missed one and continue with your routine.
Avoid taking extra tablets to make up for a forgotten dose. Completing the full course is important even when symptoms begin to subside, as stopping treatment early may affect the overall outcome. Drinking adequate water during therapy is generally recommended, as it supports normal kidney function and helps the body process the medicine. Acivir 800mg should not be shared with others, even if they experience similar symptoms, because the correct dose and treatment approach depend on individual medical factors. Always consult a doctor before making any changes to your treatment schedule.
What is Acivir 800mg used for?
Acivir 800mg contains acyclovir 800mg — the highest strength oral acyclovir tablet, primarily used for herpes zoster (shingles): 800mg five times daily for 7 days. It is also used at this dose for varicella (chickenpox) in adults and high-risk adolescents (800mg four times daily for 5 days), for severe recurrent genital herpes requiring higher exposure, and for CMV prophylaxis in renal transplant recipients (high-dose acyclovir). The 800mg tablet simplifies the regimen compared to using multiple lower-strength tablets.
How should Acivir 800mg be taken for shingles?
Acivir 800mg for herpes zoster: one tablet five times daily (every 4 hours while awake — approximately 6am, 10am, 2pm, 6pm, 10pm) for 7 days. Start within 72 hours of rash onset. Drink at least 2–3 litres of water daily to prevent acyclovir crystal deposition in renal tubules. Take with food if nausea is problematic. Do not miss doses — consistent antiviral exposure reduces viral shedding and complications. If renal impairment: dose reduction is essential — high-dose acyclovir in renal failure causes severe neurological toxicity (confusion, myoclonus, seizures).
What complications does early Acivir 800mg treatment prevent in shingles?
Starting Acivir 800mg within 72 hours of shingles rash onset reduces: rash duration by 2–3 days, acute pain duration and severity, new vesicle formation period, viral shedding duration, and risk of post-herpetic neuralgia (PHN) — chronic nerve pain persisting weeks to years after rash healing, which affects up to 30% of zoster patients over 60. Treatment started after 72 hours has limited rash benefit but may still reduce PHN risk. Acyclovir does not prevent zoster-associated complications like CNS involvement (zoster encephalitis) unless started very early — IV acyclovir is used for severe CNS zoster.
Is Acivir 800mg safe in patients with renal impairment?
Renal impairment significantly increases acyclovir toxicity risk at 800mg — dose reduction is mandatory. eGFR 25–50: reduce to 800mg every 8 hours (TID). eGFR 10–25: reduce to 800mg every 12 hours (BID). eGFR <10: 800mg every 24 hours. Haemodialysis patients: 800mg post-dialysis and re-dose after each session. Maintain 2–3 litres fluid intake daily. Without dose adjustment, high-dose acyclovir accumulates and causes severe neurotoxicity (acute confusion, myoclonus, tremor, seizures) — a medical emergency requiring IV saline and dose cessation. Check renal function before prescribing.
What is the risk of neurological toxicity with Acivir 800mg?
Acyclovir neurotoxicity is rare at standard doses in patients with normal renal function but becomes significant with renal impairment or high-dose therapy. Features: confusion, agitation, tremor, myoclonus, hallucinations, and seizures — typically appearing within 24–72 hours of accumulation. Risk factors: renal impairment (most important), elderly age, dehydration, concomitant nephrotoxic drugs. Management: stop acyclovir, IV saline to enhance renal clearance, haemodialysis in severe cases — neurotoxicity is reversible with adequate supportive care. Always check renal function and ensure adequate hydration before using 800mg dose.
How does Acivir 800mg compare to famciclovir for shingles?
Acyclovir 800mg five times daily and famciclovir 500mg three times daily both treat herpes zoster with equivalent antiviral efficacy (rash duration, viral shedding, PHN rates). Famciclovir's advantages: much simpler dosing (3 doses/day vs. 5), and penciclovir (famciclovir's active form) has a longer intracellular half-life (10–20 hours vs. 1 hour for acyclovir triphosphate). Acyclovir's advantage: significantly lower cost, decades-long safety record, and familiarity. For patients where adherence is not a concern, Acivir 800mg is clinically equivalent to famciclovir at substantially lower cost.
Is Acivir 800mg equivalent to Zovirax 800mg?
Yes. Acivir 800mg and branded Zovirax 800mg tablets both contain acyclovir 800mg in bioequivalent formulations. Acivir is the generic alternative providing the same shingles and varicella antiviral treatment as Zovirax at significantly lower cost.
Can I order Acivir 800mg from PremiumRxDrugs for international delivery?
Yes. PremiumRxDrugs.com ships Acivir 800mg to the USA, UK, Australia, and many other countries. Our genuine manufacturer-verified antiviral medications, competitive pricing, and free worldwide shipping on qualifying orders make us a reliable international pharmacy for herpes zoster treatment.
What side effects are most common with Acivir 800mg (shingles dose)?
At 800mg five times daily, side effects are more frequent than at lower doses: nausea and vomiting (most common — take with food, ensure adequate hydration), headache and dizziness, and fatigue. Neurological: confusion, lethargy, and tremor are more likely at this dose, particularly in elderly or renally impaired patients — these are warning signs of toxicity requiring dose review. Crystalluria and renal impairment with inadequate hydration. Rash and photosensitivity occasionally occur. LFTs may transiently rise. Report any confusion or severe neurological symptoms immediately.
Can Acivir 800mg prevent post-herpetic neuralgia after shingles?
Acyclovir 800mg five times daily reduces PHN risk but does not eliminate it. Meta-analyses show oral acyclovir treatment of acute zoster reduces the proportion with pain at 6 months by approximately 46% compared to untreated patients. PHN prevention is most effective when acyclovir is started within 48–72 hours of rash onset in patients over 50 (highest PHN risk group). Concurrent use of corticosteroids (prednisolone 40–60mg tapering over 3 weeks) reduces acute pain duration but does not further reduce PHN risk beyond antiviral alone. Tricyclic antidepressants, pregabalin, or gabapentin are used to treat established PHN.
Can acyclovir 800mg treat varicella (chickenpox) in adults?
Yes — acyclovir 800mg four times daily for 5 days is recommended for varicella in adults, immunocompromised patients, and pregnant women. Adult chickenpox is significantly more severe than childhood disease — pneumonia (varicella pneumonitis), hepatitis, and encephalitis are more common. Acyclovir reduces disease duration, severity, and complication risk when started within 24 hours of rash onset. After 72 hours, rash benefit is limited but antiviral therapy may still be warranted in high-risk patients. IV acyclovir (10–15mg/kg TID) is used for severe or complicated varicella requiring hospitalisation.
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