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AntiparasiticsAntiparasitics

Antiparasitic medicines target particular worms, protozoa or malaria parasites. Symptoms alone rarely identify the organism, so tests, exposure and travel history can be central to choosing treatment.

Stromectol

Ivermectin

3 · 6 · 12mg

Ivermectin 3mg, 6mg and 12mg tablets, used for strongyloidiasis, scabies and onchocerciasis. It binds chloride channels found only in invertebrates.

From$1.44/ tabletView

Plaquenil

Hydroxychloroquine

200 · 400mg

Hydroxychloroquine 200mg and 400mg film-coated tablets, used in the management of rheumatoid arthritis and systemic lupus erythematosus. A DMARD.

From$0.53/ tabletView

Albenza

Albendazole

400mg

Albendazole 400mg tablets, used for helminthiasis, giardiasis and parasitic worm infection. A benzimidazole that degrades microtubules in parasite cells.

From$0.47/ tabletView

Aralen

Chloroquine

250 · 500mg

Chloroquine 250mg and 500mg tablets, used for malaria. An aminoquinoline that interferes with parasite growth inside the red blood cells.

From$0.56/ tabletView

Biltricide

Praziquantel

600mg

Praziquantel 600mg tablets, used for schistosomiasis and liver flukes. It makes the parasite's membrane permeable to calcium, causing paralysis.

From$2.34/ tabletView

Ornidazole Tablets

Ornidazole

500mg

Ornidazole 500mg tablets, used for trichomoniasis, amoebiasis and giardiasis. A nitroimidazole that disrupts DNA synthesis in protozoa.

From$0.98/ tabletView

Key points

  • Anthelmintics, antiprotozoals and antimalarials are separate medicine groups and are not interchangeable.
  • Malaria treatment and prevention depend on the destination, resistance pattern, timing and individual health factors.
  • Fever during or after travel to a malaria-risk area needs urgent medical assessment rather than self-treatment.

Listings are for comparison and general information, not a diagnosis or travel recommendation; suitability and supply depend on clinician and pharmacy checks and any required prescription.

How the medicine groups differ

Anthelmintics such as albendazole, ivermectin and praziquantel treat different types of worms. Antiprotozoal medicines such as ornidazole have selected uses. Antimalarials such as chloroquine are useful only in appropriate settings because parasite resistance and regional guidance affect the choice.

What antiparasitics are used for

This category includes medicines used for helminthiasis, malaria, giardiasis and strongyloidiasis. Stool, blood or other tests may be needed, and treatment can differ for uncomplicated and invasive infection.

Important safety checks

Tell the clinician about recent and past travel, freshwater or food exposure, pregnancy, age, weight, liver or kidney problems and current medicines. Repeating deworming treatment without identifying persistent symptoms can delay another diagnosis.

When to seek urgent care

Seek immediate assessment for fever after travel to a malaria-risk area, confusion, seizures, breathing difficulty, fainting, jaundice, blood in stool or vomit, severe dehydration or intense abdominal pain. Malaria can worsen quickly even when early symptoms appear mild.

Further reading