Qualaquin is the brand name of quinine. Drugs.com reports that Qualaquin is the only medication approved for use in the U.S. due to the risk of serious side effects or death associated with quinine. The medication is used to treat malaria, a disease caused by parasites like mosquitoes, according to Drugs.com. As with any medication, Qualquin has the potential for side effects.
Serious Side Effects
Serious side effects associated with the use of Qualquin should be reported to a medical professional right away. Drugs.com reports the potential for fever, chills, confusion, weakness, severe vomiting, stomach pain, diarrhea, vision or hearing problems, breathing difficulty, urinating less than usual or not at all, chest pain, increased or irregular heartbeats and shallow or weak breathing. RxList.com warns of other serious hazards including feeling faint, pale skin, bruising easily, purple or red tiny spots under the skin, sore throat, headache, severe blistering or peeling, red skin rash, appetite changes, darkened urine, clay-colored stools and/or jaundice.
Less Serious Side Effects
Some users may experience less severe side effects that are only considered to be severe if they are persistent or bothersome. Drugs.com lists the possible side effects to include headache, ringing in the ears, blurry vision, dizziness, vertigo, increased sweating, mild nausea, mild diarrhea or stomach pain, muscle weakness, warm skin, red skin and/or tingly skin.
Allergic Reaction
Individuals who are allergic to Qualaquin may experience moderate to severe side effects. These may include hives, trouble breathing and swelling of the face, lips, tongue and/or throat. Drugs.com warns users to report these side effects to a doctor right away.
Rare Complications
RxList.com warns of numerous rare side effects that occur in fewer than 1 percent of users. These include restlessness, asthma attacks, swelling of the lungs, increased or decreased blood pressure, coma, heart attack, disorientation, visual disturbances, night blindness, irregular color vision, deafness, kidney failure, kidney infection or inflammation and/or cardiac arrest.
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