Naphthoquine — Uses, Dosage, Side Effects & Safety

Drug class: Antimalarial agent

Overview

Naphthoquine is an antimalarial medication used primarily to treat uncomplicated malaria, especially infections caused by Plasmodium falciparum and Plasmodium vivax. It is often used in combination with artemisinin derivatives, such as artemisinin-naphthoquine, to improve effectiveness and reduce the risk of resistance. Naphthoquine works by interfering with the parasite's ability to multiply and survive inside red blood cells. This helps clear the infection from the body and alleviates symptoms such as fever, chills, and fatigue. Key points for patients: Complete the full course of treatment even if you feel better, take the medication exactly as prescribed, and report any unusual side effects to your healthcare provider. Naphthoquine is not used for malaria prevention (prophylaxis) or for severe malaria.

Therapeutic uses

  • Treatment of uncomplicated falciparum malaria
  • Treatment of uncomplicated vivax malaria
  • Prophylaxis of malaria (in combination with other antimalarials)

For related Naphthoquine guidance, compare Lumefantrine.

Common side effects

  • Nausea
  • Vomiting
  • Abdominal pain
  • Dizziness
  • Headache
  • Diarrhea
  • QT prolongation

Frequently Asked Questions about Naphthoquine

What is naphthoquine used for?

Naphthoquine is used to treat uncomplicated malaria, especially infections caused by Plasmodium falciparum and Plasmodium vivax. It is often combined with artemisinin for increased effectiveness.

Can I use naphthoquine to prevent malaria?

No, naphthoquine is not recommended for malaria prevention (prophylaxis). It is only used for treatment of active malaria infections.

Is naphthoquine safe during pregnancy?

The safety of naphthoquine in pregnancy is not well established. Use only if clearly needed and prescribed by your doctor. Discuss risks and benefits with your healthcare provider.

What should I do if I vomit after taking naphthoquine?

If you vomit within 1 hour of taking naphthoquine, repeat the dose. If vomiting persists, contact your healthcare provider for further instructions.

Are there any foods or drinks I should avoid?

Avoid alcohol while taking naphthoquine, as it may increase the risk of liver side effects. There are no specific food restrictions, but take the medication with water.

Can children take naphthoquine?

Yes, naphthoquine can be used in children, but dosing is based on body weight and should be determined by a healthcare provider.

What are the signs of a serious reaction to naphthoquine?

Serious reactions include severe allergic reactions (anaphylaxis), jaundice, severe skin rash, confusion, or irregular heartbeat. Seek immediate medical attention if these occur.

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.