Product image of Medovir (Aciclovir) supplied by GNH India

Medovir

Active Ingredient:
Aciclovir
Origin:
EU

Medovir (Aciclovir)

Aciclovir, the active ingredient in Medovir, is an antiviral presented as an oral tablet for oral use. It treats herpes simplex virus infections, including cold sores and genital herpes, as well as varicella‑zoster virus infections such as chickenpox and shingles in adults and children.

GNH India supplies Medovir as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide. The company adheres to stringent quality standards and provides reliable sourcing for regulated markets. Its distribution network covers Europe, Asia, Africa and the Americas, ensuring timely delivery.

Manufacturer / TM Owner

Medochemie Ltd.

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Indications & Clinical Uses

  • Aciclovir is used to treat viral infections caused by herpes viruses, reducing disease severity and duration.
  • Herpes simplex virus infections (cold sores, genital herpes): Reduces lesion formation, accelerates healing, lessens pain, and shortens the overall outbreak period.
  • Varicella‑zoster virus infections (chickenpox, shingles): Limits viral replication, shortens rash duration, decreases nerve pain, and lowers the risk of post‑herpetic neuralgia.
  • Herpes labialis: Provides symptomatic relief, faster resolution of oral lesions, and reduces the likelihood of recurrence during the treatment course.

How It Works

  • Aciclovir is a nucleoside analogue that is phosphorylated by viral thymidine kinase to aciclovir monophosphate, then further converted by cellular kinases to the active triphosphate. The triphosphate competitively inhibits viral DNA polymerase, terminating DNA chain elongation and preventing viral DNA synthesis, thereby limiting replication of herpes simplex and varicella‑zoster viruses. Because the initial phosphorylation step is virus‑specific, aciclovir accumulates preferentially in infected cells, enhancing its selectivity.

Side Effects

Aciclovir is generally well tolerated, but a range of adverse reactions have been reported.

Common Side Effects

  • Nausea
  • Headache
  • Abdominal pain or discomfort
  • Fatigue
  • Dizziness

Serious or Rare Side Effects

  • Acute renal failure or worsening of pre‑existing renal impairment
  • Severe allergic reactions such as Stevens‑Johnson syndrome or toxic epidermal necrolysis
  • Hematologic abnormalities including thrombocytopenia or neutropenia
  • Hepatic dysfunction with elevated transaminases

Precautions & Warnings

  • When prescribing aciclovir, clinicians should consider several safety and handling precautions.
  • Renal function: assess baseline renal function and adjust dose in patients with impairment.
  • Hydration status: ensure adequate fluid intake to reduce risk of crystalluria.
  • Concomitant nephrotoxic drugs: monitor closely when used with aminoglycosides or NSAIDs.
  • Immunocompromised patients: watch for delayed viral clearance and potential resistance.
  • Pregnancy and lactation: evaluate risk‑benefit ratio as safety data are limited.
  • Store at ambient temperature below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Avoid Interactions

Aciclovir may interact with other medicines, altering its plasma concentration or toxicity profile.

Major Interactions (Avoid)

  • Probenecid: decreases renal excretion, markedly increasing aciclovir levels.
  • Cimetidine: reduces renal clearance, leading to higher systemic exposure.
  • Co‑administration with other nephrotoxic agents (e.g., aminoglycosides): heightens risk of renal injury.

Moderate Interactions (Monitor Closely)

  • Non‑steroidal anti‑inflammatory drugs (NSAIDs): may affect renal function, requiring monitoring.
  • Oral contraceptives: aciclovir can slightly reduce efficacy; advise additional contraceptive measures.
  • Immunosuppressants (e.g., cyclosporine): monitor for increased viral replication or toxicity.
  • Warfarin: occasional reports of altered INR; check coagulation parameters if combined.

Frequently Asked Questions

Medovir contains aciclovir and is indicated for the treatment of infections caused by herpes viruses. It is commonly prescribed for herpes simplex virus outbreaks such as cold sores and genital herpes, as well as for varicella‑zoster virus conditions including chickenpox and shingles. The drug helps to reduce lesion duration, pain, and the overall severity of the infection.

Aciclovir is a nucleoside analogue that is first phosphorylated by the viral thymidine kinase enzyme. Subsequent cellular phosphorylation converts it to aciclovir triphosphate, which competitively inhibits viral DNA polymerase. This blocks viral DNA chain elongation, preventing replication of herpes simplex and varicella‑zoster viruses while sparing uninfected cells.

The appropriate dose of Medovir is determined by the prescribing healthcare professional based on the specific infection, patient age, renal function, and other clinical factors. Dosage regimens can vary widely, so patients should follow the exact instructions provided by their prescriber and not adjust the dose on their own.

Safety data for aciclovir in pregnancy and lactation are limited, and the product is classified as pregnancy category unknown. Clinicians must weigh potential benefits against possible risks before prescribing to pregnant or nursing women. If treatment is deemed necessary, it should be used under close medical supervision.

To request Medovir, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies, and procurement teams worldwide, and will ask for trade or institutional credentials. The sales team then provides pricing, availability, shipping details (including any cold‑chain requirements), and assists with import documentation.

Medovir (aciclovir) is a first‑generation antiviral that is less bioavailable than newer agents such as valacyclovir or famciclovir, which are prodrugs offering higher systemic exposure and less frequent dosing. However, aciclovir remains a well‑studied, cost‑effective option for many herpes infections, especially where generic availability is important.

Medovir should be stored at ambient temperature below 25 °C. Keep the tablets in their original packaging, protect them from moisture and direct sunlight, and ensure the container is tightly closed. Do not store in a refrigerator or freezer unless the manufacturer specifies otherwise.

Medovir is taken orally, usually with a full glass of water. The tablets can be swallowed with or without food, unless the prescribing information advises otherwise. Patients should follow the dosing schedule prescribed by their healthcare provider and complete the full course of therapy even if symptoms improve.

Serious adverse reactions, although rare, include acute renal failure, severe allergic responses such as Stevens‑Johnson syndrome or toxic epidermal necrolysis, hematologic abnormalities like thrombocytopenia or neutropenia, and significant liver enzyme elevations. Patients should seek immediate medical attention if they experience rash, swelling, difficulty breathing, or signs of kidney dysfunction.

Medovir is contraindicated in individuals with known hypersensitivity to aciclovir or any of its excipients. Caution is advised for patients with severe renal impairment, as dose adjustment may be required. It should also be used carefully in immunocompromised patients, and only under medical supervision during pregnancy or lactation.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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