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. Is plaquenil safe Cost of hydroxychloroquine at walmart Chloroquine cancer 2015 Diamondback chloroquine phosphate Find information about common, infrequent and rare side effects of Plaquenil Oral. Tell your doctor if you have any side effect that bothers you or does not go away. These are not all the possible side effects Plaquenil. For more information, ask your doctor or pharmacist. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. These side effects are nothing to be concerned about, but if they start to worsen, then you may seek medical help immediately. Remember that you have been prescribed this medication because your doctor believes that the benefits of Plaquenil are more significant than the side effects. 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. Common side effects of plaquenil Plaquenil - Side Effects, Uses, Dosage, Overdose, Pregnancy., Plaquenil - Side Effects, Uses, Dosage, Overdose. Chloroquine cyanideChloroquine cocktailChloroquine price bootsCan you take hydroxychloroquine while breastfeeding 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. Hydroxychloroquine Side Effects Common, Severe, Long Term.. Common Side Effects of Plaquenil. Common Plaquenil side effects a study from FDA data.. Plaquenil hydroxychloroquine has been shown to improve physical function in up to 80% of patients with rheumatoid arthritis. Plaquenil hydroxychloroquine is commonly used for lupus in children because of less side effects compared to other medications. Plaquenil hydroxychloroquine helps minimize joint damage. What are the side effects of Plaquenil? The most common side effects are diarrhea, nausea, vomiting, headache, dizziness, skin rash or black spots when you look at things. Most side effects will go away when your body gets used to the medicine. Tell your doctor if you have these side effects. A lower dose may stop them. SIDE EFFECTS. The following adverse reactions have been identified during post-approval use of PLAQUENIL or other 4-aminoqunoline compounds. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.