Clinical information
Common uses
- radical cure (relapse prevention) of vivax malaria
Common side effects
- feeling sick and vomiting
- stomach pain and cramps
- dizziness
- rash and itching
Cautions
- must not be used in severe G6PD deficiency — haemolytic anaemia
- contraindicated in pregnancy
- pregnancy test needed before starting in women who could conceive
Interactions
- quinacrine — must not be combined
- avoid haemolytic or methaemoglobinaemia-inducing drugs
- QT-prolonging drugs — close ECG monitoring advised
- strong CYP2D6 inhibitors — may reduce antimalarial effect
- MAO-A inhibitors — may increase side effects
- digoxin and dabigatran — levels may rise
Pregnancy: avoid — contraindicated in pregnancy
Reference information, not medical advice — always follow your doctor or pharmacist. Source: DailyMed, dailymed.nlm.nih.gov, primaquine phosphate label, setid 3f16166d-678e-51aa-e054-00144ff88e88 (accessed 2026-08-16)