Product image of Malarone (Proguanil Hydrochloride, Atovaquone) supplied by GNH India

Malarone

Active Ingredient:
Proguanil Hydrochloride, Atovaquone
Origin:
EU

Malarone (Proguanil Hydrochloride, Atovaquone)

Atovaquone/proguanil, the active ingredient in Malarone, is an antimalarial presented as a 250 mg atovaquone / 100 mg proguanil tablet for oral use. It treats and prevents malaria infection in travelers, expatriates, and residents of endemic regions, and is indicated for both prophylaxis and treatment of acute malaria caused by Plasmodium species.

GNH India supplies Malarone as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide. The company adheres to stringent quality standards and provides reliable logistics for global distribution through its extensive network of certified partners.

Manufacturer / TM Owner

Glaxosmithkline Pharma Gmbh.

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Indications & Clinical Uses

Malarone is an antiprotozoal medication used in the prevention and treatment of malaria caused by Plasmodium species.

  • Prevention of malaria infection: provides prophylaxis for travelers and residents entering endemic areas.
  • Acute uncomplicated P. falciparum malaria: used to treat confirmed infection and achieve parasite clearance.
  • Acute uncomplicated P. vivax malaria: employed as part of therapy to eradicate blood‑stage parasites.

How It Works

  • Atovaquone interferes with the mitochondrial electron transport chain of Plasmodium parasites by inhibiting the cytochrome bc1 complex, disrupting ATP synthesis. Proguanil is rapidly metabolized to cycloguanil, which blocks the parasite’s dihydrofolate reductase enzyme, preventing folate synthesis. The combined action results in synergistic inhibition of parasite replication and survival, making the regimen effective against multiple Plasmodium species.

Side Effects

Malarone may cause a range of adverse reactions, most of which are mild and reversible.

Common Side Effects

  • Nausea: mild stomach upset.
  • Abdominal pain: intermittent cramps.
  • Headache: transient.
  • Rash: mild skin irritation.

Serious or Rare Side Effects

  • Severe hypersensitivity: includes anaphylaxis.
  • Hepatotoxicity: elevated liver enzymes, jaundice.
  • Hemolytic anemia: especially in G6PD deficiency.

Precautions & Warnings

Before prescribing Malarone, consider the following precautions to ensure safe use.

  • Pregnancy: safety not established; use only if benefits outweigh risks.
  • Breastfeeding: avoid unless essential; drug excreted in milk.
  • G6PD deficiency: monitor for hemolysis.
  • Renal or hepatic impairment: dose adjustment may be required; assess function.
  • Concomitant antiretrovirals: evaluate for reduced efficacy.
  • Store at ambient temperature below 25°C: keep in original packaging, protect from moisture.

Avoid Interactions

Malarone can interact with several medicines; review patient medication lists carefully.

Major Interactions (Avoid)

  • Rifampin: reduces atovaquone levels, may compromise efficacy.
  • Protease inhibitors (e.g., ritonavir): may increase atovaquone concentrations, risk toxicity.
  • CYP2C8 inhibitors (e.g., gemfibrozil): can raise proguanil levels.

Moderate Interactions (Monitor Closely)

  • Antacids or sucralfate: may decrease absorption of atovaquone.
  • Warfarin: may enhance anticoagulant effect.
  • St. John’s wort: may lower drug concentrations.

Frequently Asked Questions

Malarone is prescribed for the prevention of malaria infection in individuals traveling to or residing in endemic regions, and for the treatment of acute uncomplicated malaria caused by Plasmodium species such as P. falciparum and P. vivax.

Atovaquone blocks the mitochondrial electron transport chain of the malaria parasite, while proguanil is converted to cycloguanil, which inhibits the parasite’s dihydrofolate reductase enzyme. Together they halt parasite energy production and folate synthesis, leading to synergistic parasite death.

The exact dosing regimen is determined by the prescribing clinician based on the indication, patient weight, age, and travel schedule. Typical regimens involve one tablet taken orally once daily, but the prescriber sets the precise dose and duration.

Safety data for Malarone during pregnancy are limited, and it is classified as having an unknown pregnancy category. It should be used only if the potential benefit justifies the risk. The drug is excreted in breast milk, so breastfeeding mothers should consult their healthcare provider before use.

To order Malarone, submit an enquiry on the product page at gnhindia.com, specifying 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 required import documentation.

Malarone combines two agents with complementary mechanisms, offering a high efficacy rate and a favorable safety profile compared with monotherapy options such as chloroquine or mefloquine. Its once‑daily dosing and tolerability make it a preferred choice for many travelers, though drug‑resistance patterns and individual contraindications must be considered.

Store Malarone tablets at ambient temperature below 25 °C, in the original blister pack, protected from moisture and direct sunlight. Keep the container tightly closed and out of reach of children. Do not store in humid or excessively hot environments.

Malarone tablets are taken orally with food or a milky drink to enhance absorption. The tablet should be swallowed whole with a full glass of water. Patients should follow the prescriber’s instructions regarding timing relative to travel and treatment courses.

Serious adverse reactions, although rare, include severe hypersensitivity reactions such as anaphylaxis, hepatotoxicity manifested by elevated liver enzymes or jaundice, and hemolytic anemia, particularly in individuals with glucose‑6‑phosphate dehydrogenase (G6PD) deficiency.

Malarone is contraindicated in patients with known hypersensitivity to atovaquone, proguanil, or any component of the formulation. Caution is advised for individuals with severe renal or hepatic impairment, G6PD deficiency, pregnant or breastfeeding women unless the benefit outweighs the risk, and those taking medications that have major interactions.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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