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 800 mg contains active ingredient Acyclovir. It is potent antiviral drug to treat cold sores around the mouth, shingles, and chickenpox. Acivir Dispersible 800mg Tablets is used to diagnose various forms of infections caused by the viruses. This is prescribed to treat outbreaks of genital herpes. The viruses causing such infections continue to live in the body, even between outbreaks, whereas acyclovir decreases the severity and length of these,outbreaks.
What is Acivir tablet 800 mg used for?
Acyclovir 800mg is known to treat the mouth sores and pain/itching faster than ordinary medications. In some cases, it prevents future episodes and treats outbreaks of genital herpes. Acyclovir is used to treat chickenpox, shingles (herpes zoster) and cold sores around the mouth. Usually, Acyclovir acts to prevent certain infections caused by some viruses. In addition, acyclovir can also decrease the risk of the virus spreading to other parts of the body and causing serious infections due to a weak immune system.
How does Acyclovir 800 mg work?
Acivir Dispersible 800mg Tablets, the active component of the medicine is a strong antiviral drug for herpes. This medicine works by inhibiting the DNA polymerase of the virus, which in turn prevents it from spreading.
What medicines interact with Acivir 800 mg?
Some drugs or medicinal elements are that that may change the effectiveness of acyclovir medication. Such drugs include amphotericin B and some antibiotic medicines like amikacin, kanamycin, tobramycin, and gentamicin. Some other drugs that may interact with Acyclovir include nonsteroidal anti-inflammatory drugs, pain relievers and HIV/AIDS drugs.
How to take Acivir 800 mg tablet?
You can take Acivir 800 mg tablets orally before or after a meal. Usually, it’s taken 2-5 times a day under the prescription of the doctor. The liquid form of this medicine is also available; you just shake the bottle before opening it and then take an appropriate dose as your doctor directs. Its dosage probably depends on the medical condition of a patient as well as response to treatment.
When should Acivir 800 mg not be used?
It is important that your doctor knows about your medical history before prescribing this medication. Remember that Acyclovir is not formulated to prevent you from transmitting herpes to those around you, so ensure that you take all the necessary precautions to prevent this. You have to be careful in certain conditions like:
- If you are pregnant, or breastfeeding
- If a problem pertains to the functioning of your kidneys
- If you are taking or using any other medicines
- If you are allergic to an antiviral drug
What are the side effects of Acivir 800mg?
Acyclovir 800 mg may cause some possible side effects such as:
- Vomiting
- Drowsiness
- Headaches
- Fatigue
- Diarrhea
- Upset stomach
- Dizziness or lightheadedness
- Nausea
It’s better to consult your doctor right away if any of these side effects occur too frequently. Moreover, there are some other severe side effects of Acyclovir that include:
- Seizures
- Speech difficulty
- Easy bruising or bleeding
- Shortness of breath or swallowing difficulty
- Jaundice
- Mental or mood changes
- Vision problems
- Irregular heartbeat
If any of these effects persist or worsen, you have to tell your doctor or pharmacist without any delay. The unusual back/side pain, shaky/unsteady movement, mental/mood changes trouble speaking might be provoked by this medication.
Acyclovir may rarely raise a life-threatening disorder that affects the blood cells, kidneys, as well as other body parts. This disorder is more likely to occur if you have conditions related to a weakened immune system (such as HIV disease, bone marrow transplant, kidney transplant)
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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