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 long qt Anyone developed kidney stone while on hydroxychloroquine Plaquenil depression side effects Plaquenil during pregnancy lupus Common side effects of Primaquine include nausea, stomach pain or upset, vomiting, loss of appetite, heartburn, and ; abdominal cramps. Tell your doctor if you have rare but very serious side effects of Primaquine including signs of serious infection such as high fever, severe chills, persistent sore throat, Get medical help right away if you have any very serious side effects, including severe dizziness, fainting, fast/slow/irregular heartbeat, seizures. This medication may cause serious eye. If you have psoriasis. If you have porphyria. If you are taking cimetidine. If you. What are some other side effects of Chloroquine? All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother. 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. Chloroquine side effects psoriasis Chloroquine Oral Route Side Effects - Mayo Clinic, Chloroquine Oral Uses, Side Effects, Interactions. Aralen rheumatoid arthritis Tell your doctor right away if you experience any of the following severe side effects Unusual behavior or mood changes. Severe diarrhea. Vision problems or blurred vision. Trouble reading words or seeing parts of objects. Sensitivity to sunlight. Hearing loss. Ringing in the ears. Chloroquine Aralen - Side Effects, Dosage, Interactions.. Chloroquine Indications, Side Effects, Warnings -. Psoriasis Causes & Triggers National Psoriasis Foundation. If you have psoriasis, chloroquine Aralen and hydroxychloroquine Plaquenil can cause problems. Other Medicines That Might Trigger a Flare A few other drugs to discuss with your doctor include Chloroquine is a relatively well-tolerated. medicine. The most common adverse reactions reported are stomach pain, nausea, vomiting, and headache. These side effects can often be lessened by taking chloroquine with food. Chloroquine may also cause itching in some people. All medicines may have some side effects. Nervousness, irritability, dizziness although these effects are uncommon Major neurological side effects confusion, seizures – These are quite rare, but if you experience them, alert your doctor immediately. Exacerbation of psoriasis – If you have psoriasis, Plaquenil may make your condition worse.