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Name of the generic: quinine KWYE-nine Quinine [KWYE-nine]
Drug class: antimalarial quinolines

What is Qualaquin?

The U.S. Food and Drug Administration has prohibited the sale of all non-approved versions that contain quinine. Don't buy Qualaquin via the Internet or from sellers located outside of the United States.

Qualaquin can be used to treat non-complicated malaria, which is a condition caused by parasites. Malaria-causing parasites usually get into the body via the bite of mosquitoes. The spread of malaria is prevalent in regions like Africa, South America, and southern Asia.

Qualaquin is not able to treat serious forms of malaria. Therefore, it is not recommended to treat malaria.

There are some who have used Qualaquin to relieve leg cramps, but this isn't an FDA-approved treatment. Making use of this medication incorrectly or without consulting an experienced physician could result in severe side effects or even death.

Qualaquin can also be used for reasons not mentioned in this guideline for medication.

Side effects of Qualaquin

Contact a medical professional immediately. If you notice any of the following symptoms that indicate an allergic reaction, symptoms of hives; breathing difficulties; or swelling of your lips, face, or tongue. Qualaquin could cause serious adverse side effects. Contact your physician immediately if you experience:

  • Fever, chills, bodyaches, and flu symptoms such as sores on your throat and mouth
  • Easily bleeding, bruising that is not common (nose, vagina, mouth, or rectum), and red or purple areas of skin;
  • Headache that causes chest pain, extreme dizziness, fainting, rapid, or pounding heartbeats;
  • Suddenly numbness or weakness (especially in one part or the other) an abrupt migraine, blurred or slurred speech, or issues with balance
  • Chest pain, sudden chest pain, sudden cough, wheezing, fast breathing, coughing up blood;
  • Difficulties with hearing or vision;
  • Discomfort, swelling, or redness in either or both legs;
  • Intense pain in your side or lower back; bleeding in the urine; a small or no urine
  • Low blood sugar (more frequent for pregnant women) headache or feeling hungry, weak, sweating, anxiety, confusion, dizziness, fast heart rate, or feeling anxious;
  • Lack of appetite loss of appetite, dark urine, clay-colored stool, jaundice (yellowing of the eyes or skin), or
  • Extreme skin reactions that cause severe skin reactions include a fever, a painful throat, swelling on your tongue or face, burning eyes, pain in your skin, and the appearance of a purple or red skin rash that spreads (especially on the face or the upper part of your body) and can cause blisters and peeling.

Common negative side effects of Qualaquin could include:

  • Headache, blurred vision, changes in color vision
  • The sensation of sweating or flushing (warmth, redness, or tingling sensation);
  • Moderate dizziness, spinning sensations, and a ringing sound in your ear; or
  • Upset stomach, vomiting, stomach pain

This is not a comprehensive list of all the side effects. Others could happen. Contact your physician to seek medical advice on adverse effects. You can report any adverse reactions to the FDA at 1-800-FDA-1088.


Qualaquin may cause serious side effects for your kidneys, heart, and blood cells. Take a break from Qualaquin and contact your doctor immediately if you notice chest pain or headaches, intense dizziness, or fast or pounding heartbeats. You may also experience unusual bleeding or bruising (nosebleeds or bleeding gums, spots of red or purple under your skin), symptoms of an infection (fever, chills, or mouth sores), extreme low back discomfort, or urine with blood.

You shouldn't use Qualaquin in the event that you suffer from an irregular heartbeat disorder known as the Long QT syndrome or an enzyme deficiency that is genetic, known as glucose-6-phosphate dehydrogenase deficit (G-6-PD), myasthenia gravis, optic neuritis (inflammation of nerves that run through your eyes), or if you've used this medication in the past and it resulted in a blood-cell disorder or massive bleeding.

Certain people have tried Qualaquin to relieve leg cramps, but it isn't an FDA-approved treatment. Making use of this medication incorrectly or without consulting medical professionals could cause grave side effects or even death.

Before taking this medication

It is not recommended to use this medication if you have ever experienced an allergy reaction to Qualaquin or similar medications like mefloquine or quinidine or suffer from:

  • A heart rhythm disorder known as Long QT syndrome;
  • An enzyme deficiency called glucose-6-phosphate dehydrogenase deficiency (G-6-PD);
  • Myasthenia gravis;
  • Opto-optic neuritis (inflammation of the optic nerve), also known as
  • If you've previously had a prescription for Qualaquin and it resulted in an abnormality in blood cells that is severe or kidney issues,

To ensure that Qualaquin is appropriate for you, consult your doctor if:

  • The heart condition or an irregular heartbeat disorder.
  • Lower levels of platelets in your blood.
  • Lower potassium levels in your blood (hypokalemia) or
  • Kidney disease or liver problems

FDA pregnancy category C. It isn't known whether Qualaquin could harm an unborn baby. Consult your physician if you are expecting or plan to become pregnant while taking this medication. Quinine is a substance that can be absorbed into breast milk and could harm nursing babies. Consult your physician if you are nursing your baby. Don't give medicine to children younger than 16.

How to take Qualaquin?

Follow the instructions on the prescription label. Don't take Qualaquin in smaller or greater quantities or for longer than the recommended time. Take it with food if Qualaquin can upset your stomach. Use this medicine for the duration of the prescription. Your symptoms could get better until your condition is eliminated. If you are in need of surgical treatment or medical testing, notify your medical professionals ahead of time that you're taking Qualaquin. It is possible that you will need to stop taking the medication for a brief period of time. Consult your doctor if symptoms persist after two days of treatment or if you experience a recurrence after taking the medication. Place it in a cool, dry place far from heat and moisture.

What happens if I miss a dose?

Do not miss the dose; take it as soon as you can remember. If you're over four hours behind on your dose, take the missed dose and then take the medication at your next dosage time. Do not take additional medicine to make up for the missed dose.

What happens if I overdose?

For medical emergencies, seek emergency medical attention or contact the Poison Help line toll-free at 1-800-222-1222.

Avoid this

Do not take other medications to treat malaria without your doctor's guidance. These include chloroquine, halofantrine, mefloquine, and halofantrine.Do not use an antacid without consulting your doctor. Make sure you only use the antacid recommended by your physician. Certain antacids may cause problems with your body's ability to absorb Qualaquin. Qualaquin could cause blurred vision and a decrease in your thinking or reaction. Be aware when you drive or engage in any activity that requires the driver to remain conscious and capable of seeing clearly. Do not take Qualaquin for the treatment of any disease that hasn't been evaluated by your physician.

Interaction with other drugs

Numerous drugs may be incompatible with Qualaquin. The list of possible interactions is not exhaustive. included here. Inform your doctor of the medications you take and all you take or stop using while you are treated with this medication, particularly:




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