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 mefloquine hydroxychloroquine Hydroxychloroquin eye Chloroquine psoriasis Plaquenil side effects weight gain 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 Our Aralen chloroquine phosphate 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. Psoriasis skin disease or Stomach or bowel problems—Use with caution. May make these conditions worse. Bradycardia slow heartbeat or Heart disease or Heart rhythm problems, or history of or Hypokalemia low potassium in the blood, uncorrected or Hypomagnesemia low magnesium in the blood, uncorrected—Use with caution. 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 Drugs That Can Trigger Psoriasis Flares, Side Effects of Aralen Chloroquine, Warnings, Uses Regimens of chloroquinePlaquenil treatment chronic urticariaChloroquine exoerythrocyticIs there a difference between hydroxychloroquine and hydroxychloroquine sulfateHow to make hydroxychloroquine at home Find patient medical information for Chloroquine Phosphate Bulk on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Chloroquine Phosphate Bulk Uses, Side Effects.. Chloroquine Oral Route Before Using - Mayo Clinic. Chloroquine Malaria and Rheumatoid Arthritis Order. 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, Worsening of Psoriasis and Porphyria Use of Chloroquine phosphate tablets in patients with psoriasis may precipitate a severe attack of psoriasis. When used in patients with porphyria the condition may be exacerbated. Chloroquine phosphate tablets should not be used in these conditions unless the benefit to the patient outweighs the potential risks. Rather, it suppresses the cells of your immune system that cause the psoriasis rash. Because of the way it works, methotrexate can cause many side effects. The drug is broken down by your liver and then eliminated from your body by the kidneys. It can cause harmful effects to these organs if used for long periods.