Malaria Home > Precautions and Warnings With Quinine

Let your healthcare provider know if you have any medical issues, such as problems with your kidneys, liver, or heart, before taking quinine. Precautions and warnings with this drug also apply to women who are pregnant or nursing. Also, some people should avoid this prescription medication, including those who are taking certain medications or who have certain allergies.

What Should I Tell My Healthcare Provider Before Taking Quinine?

You should talk with your healthcare provider prior to taking quinine sulfate (Qualaquin®) if you have:
  • Kidney disease, such as kidney failure (renal failure)
  • Liver disease, such as hepatitis, cirrhosis, or liver failure
  • Had an abnormal electrocardiogram (ECG) or a heart problem known as QT prolongation
  • Heart rhythm problem, such as atrial fibrillation, also called afib.
  • Any other heart problems
  • Low levels of an enzyme called glucose-6-phosphate dehydrogenase (G6PD)
  • An autoimmune disease called myasthenia gravis
  • A history of inflammation of the eye nerve (optic neuritis)
  • Any allergies, including to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
  • Pregnant or thinking of becoming pregnant
  • Breastfeeding.
Make sure to tell your healthcare provider about any other medications you are taking, including prescription and nonprescription medicines, vitamins, and herbal supplements.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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