Antimalarial
Last reviewed June 2026
Who is this for?
Quinine is an antimalarial drug that works by killing the malaria parasite inside your red blood cells, stopping it from multiplying and helping your body recover from the infection.
Inhibits Plasmodium parasite protein synthesis by intercalating into parasite DNA and binding to the 80S ribosome, disrupting the parasite's metabolic processes and preventing erythrocyte rupture. Additionally, increases the pH of the parasite's digestive vacuole, impairing hemoglobin digestion and parasite survival.
Prescription Required
You need a doctor's prescription to buy this drug.
Explore this drug
For adults, the usual dose is 600 mg (two 300 mg tablets) taken every 8 hours for 7 days. Take it with food to reduce stomach upset. Swallow tablets with a full glass of water. Quinine tastes very bitter — this is normal. Always complete the full 7-day course even if you feel better after a few days.
If you miss a dose, take it as soon as you remember. But if it is almost time for your next dose, skip the missed one and continue your normal schedule. Do not take two doses at once to make up for it.
Always buy quinine from a licensed pharmacy — fake and substandard antimalarials are common from roadside sellers and open markets in Nigeria. Complete the full 7-day course even if you feel better after 2-3 days, otherwise the malaria can come back stronger. Eat regular meals while taking quinine because it can cause your blood sugar to drop dangerously low, especially if you are not eating well.
Avoid taking quinine with mefloquine (another antimalarial) as it increases the risk of seizures and heart problems. Quinine can increase the effect of blood thinners like warfarin, causing dangerous bleeding. Avoid alcohol while on quinine as it can worsen dizziness and increase the risk of low blood sugar.
Check your specific combination
Is it safe to take Quinine with your other drugs?
Quinine should only be used during pregnancy if prescribed by a doctor for severe malaria where the benefit outweighs the risk — it is not safe for self-medication during pregnancy or breastfeeding.
Store in a cool, dry place away from direct sunlight and heat — Nigerian weather can be very hot, so avoid storing near windows or in cars. Keep away from moisture and out of reach of children.
For information only — not medical advice. Always talk to a doctor or pharmacist before changing your medication.
Names this drug is sold under — especially in Nigerian and West African pharmacies
No brand names recorded for Quinine yet.
Counterfeit Drug Warning
Fake drugs are a serious problem in Nigeria. Always buy from a registered pharmacy. If the packaging looks different from what is described above, do not use it.