Product image of Isoprinosine (Inosine Pranobex) supplied by GNH India

Isoprinosine

Active Ingredient:
Inosine Pranobex
Origin:
EU

Isoprinosine (Inosine Pranobex)

Inosine Pranobex, the active ingredient in Isoprinosine, is an immunomodulator presented as an oral dosage form for oral use. It is employed to support the immune response in viral infections such as herpes simplex, influenza, and in certain immunodeficiency conditions. It is indicated for acute viral illnesses and for patients with compromised immunity, offering a broad antiviral effect through immune stimulation.

GNH India supplies Isoprinosine as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies, transplant centres and clinics worldwide, providing reliable sourcing and regulatory support for global health institutions.

Manufacturer / TM Owner

Ewopharma International S.R.O.

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Indications & Clinical Uses

Isoprinosine (inosine pranobex) acts as an immunomodulatory antiviral, targeting a range of viral infections and immune‑deficient states.

  • Herpes simplex infections: reduces lesion duration and viral shedding by enhancing host immunity.
  • Influenza and other acute viral infections: shortens illness course and alleviates symptoms through immune stimulation.
  • Subacute sclerosing panencephalitis (SSPE): may slow disease progression by supporting antiviral defenses.
  • Immunodeficiency states: helps improve immune function and resistance to opportunistic infections.

How It Works

  • Inosine pranobex modulates the immune system by stimulating T‑lymphocyte proliferation and increasing interferon‑α production. The compound also enhances natural killer cell activity and promotes cytokine release, which together improve antiviral defenses. By augmenting both cellular and humoral immunity, it creates a hostile environment for viral replication across a broad spectrum of pathogens. These actions collectively reduce viral load and assist in clinical recovery.

Side Effects

Inosine pranobex is generally well tolerated, but several adverse reactions have been reported.

Common Side Effects

  • Nausea: mild to moderate stomach upset.
  • Headache: transient cranial discomfort.
  • Rash: skin erythema or mild itching.
  • Elevated liver enzymes: mild, reversible changes in hepatic function tests.

Serious or Rare Side Effects

  • Severe allergic reaction: anaphylaxis or angioedema requiring immediate medical attention.
  • Hematologic abnormalities: thrombocytopenia or leukopenia.
  • Hepatotoxicity: significant liver injury with jaundice.
  • Cardiac arrhythmias: rare cases of rhythm disturbances.

Precautions & Warnings

When prescribing or dispensing Isoprinosine, consider the following precautions to ensure safe use.

  • Pregnancy: safety has not been established; avoid use unless benefits outweigh risks.
  • Breastfeeding: unknown excretion; caution advised for nursing mothers.
  • Renal impairment: dose adjustment may be required; monitor renal function.
  • Hepatic dysfunction: monitor liver enzymes regularly.
  • Immunocompromised patients: assess risk‑benefit as immune stimulation may affect disease course.
  • Store at ambient temperature: keep below 25 °C, protect from moisture and light in original packaging.

Avoid Interactions

Inosine pranobex may interact with other medicines; awareness of key interactions helps prevent adverse outcomes.

Major Interactions (Avoid)

  • Immunosuppressants (e.g., cyclosporine, tacrolimus): may counteract immunostimulatory effect.
  • Live vaccines: increased risk of uncontrolled infection due to immune modulation.
  • Antiviral agents (e.g., acyclovir) with overlapping toxicity: potential additive hepatic stress.

Moderate Interactions (Monitor Closely)

  • Anticoagulants (warfarin): possible alteration of INR, monitor coagulation.
  • Antihypertensives: may affect blood pressure control, observe vitals.
  • CNS depressants: potential enhanced sedation, adjust dosing if needed.

Frequently Asked Questions

Isoprinosine, whose active ingredient is inosine pranobex, is used to support the immune system in a variety of viral infections such as herpes simplex and influenza, and in conditions where the immune response is weakened, including certain immunodeficiency states and subacute sclerosing panencephalitis.

Inosine pranobex enhances immune function by stimulating T‑lymphocyte proliferation, increasing interferon‑α production, and boosting natural killer cell activity. This combined cellular and humoral immune activation creates an environment that limits viral replication and assists the body in clearing infections.

The appropriate dose of Isoprinosine is determined by the prescribing clinician based on the specific indication, patient age, weight, renal and hepatic function, and overall clinical condition. No standard dosing regimen is provided here; the prescriber sets the regimen according to current medical guidelines.

Safety data for Isoprinosine during pregnancy and lactation are limited. The product is classified as having an unknown pregnancy category, so it should be used only if the potential benefit justifies the potential risk to the fetus. Breastfeeding mothers should consult their healthcare provider before use.

To order Isoprinosine, submit an enquiry on the product page at gnhindia.com indicating the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, and will request verification of trade or institutional credentials before providing pricing, availability, shipping details and any necessary import documentation.

The primary alternative for many viral infections is a virus‑specific antiviral such as acyclovir for herpes or oseltamivir for influenza. Unlike those agents, Isoprinosine works by broadly stimulating the immune system rather than directly targeting viral enzymes, offering a complementary approach especially when specific antivirals are unavailable or resistance is a concern.

Isoprinosine should be stored at ambient temperature, preferably below 25 °C. Keep the product in its original packaging, protect it from moisture and direct light, and ensure the container is tightly closed to maintain stability throughout its shelf life.

Isoprinosine is administered orally. The tablets or capsules are taken by mouth with water, usually with or without food as directed by the prescriber. The exact schedule and duration depend on the clinical indication and the treating physician’s recommendation.

Serious risks include severe allergic reactions such as anaphylaxis, hematologic abnormalities like thrombocytopenia or leukopenia, significant liver injury leading to jaundice, and rare cardiac arrhythmias. Patients should seek immediate medical attention if they experience symptoms such as difficulty breathing, unexplained bruising, yellowing of the skin or eyes, or irregular heartbeats.

Isoprinosine is contraindicated in individuals with known hypersensitivity to inosine pranobex or any of its excipients. Caution is advised for patients with severe hepatic or renal impairment, pregnant or nursing women unless clearly indicated, and those receiving live vaccines or potent immunosuppressive therapy, as the drug may interfere with intended effects.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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