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

Malastad

Active Ingredient:
Proguanil Hydrochloride, Atovaquone
Origin:
EU

Malastad (Proguanil Hydrochloride, Atovaquone)

Proguanil hydrochloride and Atovaquone, the active ingredient in Malastad, is an antimalarial presented as an oral tablet for oral use. It treats and prevents malaria infection, including acute uncomplicated Plasmodium falciparum malaria, in travelers and patients at risk.

GNH India supplies Malastad as a licensed, GDP-compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Stada Arzneimittel Ag

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Indications & Clinical Uses

  • Malastad is an antiprotozoal medication that acts against malaria parasites. It is employed in the following clinical situations:
  • Malaria prophylaxis: prevents infection in travelers to endemic regions.
  • Acute uncomplicated P. falciparum malaria: treats infection and clears parasites.
  • Mixed-species malaria (non‑falciparum): provides coverage when species identification is uncertain.

How It Works

  • The combination pairs atovaquone, which blocks mitochondrial electron transport in Plasmodium parasites, with proguanil, a dihydrofolate reductase inhibitor. This dual action disrupts parasite energy production and folate metabolism, producing a synergistic parasiticidal effect that enhances clearance of malaria organisms.

Side Effects

Adverse reactions may occur with Malastad use.

Common Side Effects

  • Nausea
  • Abdominal pain
  • Headache
  • Dizziness
  • Rash
  • Vomiting

Serious or Rare Side Effects

  • Severe allergic reactions (anaphylaxis)
  • Hepatic dysfunction
  • Stevens‑Johnson syndrome or toxic epidermal necrolysis
  • Severe neutropenia or agranulocytosis
  • Hemolytic anemia
  • Severe skin reactions such as drug reaction with eosinophilia and systemic symptoms (DRESS)

Precautions & Warnings

Before prescribing Malastad, consider the following precautions:

  • Pregnancy: safety not established; use only if benefit outweighs risk.
  • Breastfeeding: unknown safety; evaluate potential risks to infant.
  • Renal impairment: dose adjustment may be required; monitor renal function.
  • Hepatic impairment: use with caution; monitor liver enzymes.
  • Drug resistance: avoid monotherapy and ensure patient adherence.
  • Store at ambient temperature below 25°C: keep in the original pack, protect from moisture.

Avoid Interactions

Malastad may interact with other medicines. Review the following interactions:

Major Interactions (Avoid)

  • Rifampin: reduces atovaquone plasma concentrations, compromising efficacy.
  • Antacids containing aluminum or magnesium: decrease atovaquone absorption.
  • Cimetidine: may increase atovaquone levels, raising risk of toxicity.

Moderate Interactions (Monitor Closely)

  • Warfarin: potential increase in INR; monitor coagulation parameters.
  • Phenytoin: may lower atovaquone concentrations.
  • Macrolide antibiotics (e.g., erythromycin): may affect metabolism of the combination.

Frequently Asked Questions

Malastad is used to prevent malaria infection in individuals traveling to endemic areas and to treat acute uncomplicated malaria caused by Plasmodium falciparum. It may also be employed when the specific malaria species is not identified, providing broad antiprotozoal coverage.

Atovaquone inhibits the mitochondrial electron transport chain of Plasmodium parasites, disrupting energy production. Proguanil hydrochloride acts as a dihydrofolate reductase inhibitor, interfering with folate metabolism. Together they create a synergistic effect that kills the parasite more efficiently than either agent alone.

The dosage of Malastad is determined by a qualified prescriber based on the indication, patient weight, age, renal and hepatic function, and local treatment guidelines. Patients should follow the exact regimen provided by their healthcare professional.

Safety data for Malastad in pregnancy and lactation are limited. It should only be used when the potential benefit justifies any possible risk to the fetus or infant, and the decision should be made by the prescribing clinician in consultation with the patient.

To order Malastad, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details, and any necessary import documentation.

Malastad combines two agents with complementary mechanisms, offering higher efficacy and reduced resistance risk compared with single‑component drugs such as chloroquine or mefloquine. It is generally preferred for areas with known resistance to older agents, though choice depends on local resistance patterns and patient factors.

Malastad tablets should be stored at ambient temperature below 25 °C, in their original packaging, and protected from moisture and direct sunlight. Keep the product out of reach of children and do not use if the packaging is damaged.

Malastad is taken orally with a full glass of water, preferably with food or a milky drink to enhance absorption of atovaquone. The tablets should be swallowed whole and not crushed or chewed unless otherwise directed by a healthcare professional.

Serious risks include severe allergic reactions such as anaphylaxis, hepatic dysfunction, Stevens‑Johnson syndrome, severe neutropenia, and hemolytic anemia. Patients should seek immediate medical attention if they develop rash, fever, jaundice, unexplained bruising, or breathing difficulties.

Malastad should be avoided in individuals with known hypersensitivity to proguanil, atovaquone, or any tablet excipients. Caution is advised for patients with severe renal or hepatic impairment, and it is contraindicated when monotherapy is required for resistant malaria strains.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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