Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. Chloroquine and cancer Turmeric and plaquenil Plaquenil and reduced renal function Plaquenil. Uses. Hydroxychloroquine is used to prevent or treat malaria infections caused by mosquito bites. It does not work against certain types of. Side Effects. Precautions. Interactions. Tell your doctor if any of the following side effects, as they may be indications of a more serious reaction Headache. Loss of appetite. Dizziness. Nausea. Diarrhea, vomiting, or stomach pain. Skin rash. The most common side effects are nausea and diarrhea, which often improve with time. Less common side effects include rash, changes in skin pigment such as darkening or dark spots, hair changes, and muscle weakness. Rarely, hydroxychloroquine can lead to anemia in some individuals. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Plaquenil kidney side effects Hydroxychloroquine Side Effects, Dosage, Uses, and More, Plaquenil Hydroxychloroquine - Side Effects, Dosage. Stopping plaquenil medicationLysosome chloroquine Blood creatinine increased is found among people who take Plaquenil, especially for people who are female, 60+ old, have been taking the drug for 1 month, also take medication Enbrel, and have Pain Will you have Blood creatinine increased with Plaquenil.. Hydroxychloroquine Plaquenil. Hydroxychloroquine Side Effects Common, Severe, Long Term.. Aug 26, 2016 In summary Plaquenil isn't causing tyour new problems. It probably caused only the nausea, diarrhea, stomach cramps, and intense vertigo. BTW 100 mg daily may reduce side effects, but this low dosage also greatly annihilates its positive effects. 100 mg are a drop maybe two. on a hot stone. And finally Our Plaquenil hydroxychloroquine Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. Some side effects of hydroxychloroquine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.