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 injection for malaria treatment Adverse reactions plaquenil How Does This Medication Work? What Will It Do For Me?What FormS Does This Medication Come in?How Should I Use This medication?Who Should Not Take This medication?What Side Effects Are Possible with This medication?Are There Any Other Precautions Or Warnings For This medication?What Other Drugs Could Interact with This medication? Consumer Medicine Information CMI about APO-Hydroxychloroquine hydroxychloroquine sulfate intended for persons living in Australia. What APO- Hydroxychloroquine looks like. White to off-white, capsule-shaped tablets, embossed "HCQS" on one side, plain on the other side. Each tablet contains 200 mg of hydroxychloroquine sulfate as the active ingredient equivalent to 155 mg hydroxychloroquine. 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. Apo-hydroxychloroquine 200 mg APO-Hydroxychloroquine Tablets - NPS MedicineWise, APO-Hydroxychloroquine hydroxychloroquine Sides effects of hydroxychloroquine Hydroxychloroquine is used to prevent or treat malaria infections caused by mosquito bites. It does not work against certain types of malaria chloroquine-resistant. The United States Center for. Hydroxychloroquine Oral Uses, Side Effects, Interactions.. APO-Hydroxychloroquine - Thailand Medical News. Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria. For long-term use, the dose of hydroxychloroquine is usually reduced to 200 mg to 400 mg daily. Malaria The recommended preventative adult dose is 400 mg on exactly the same day of each week, beginning 2 weeks before exposure and continued for 8 weeks after leaving the high-risk area. Each tablet contains 200 mg of hydroxychloroquine sulfate as the active ingredient. The man had history of rheumatoid arthritis diagnosed from 3 months ago and was administered hydroxychloroquine 200 mg and prednisolone 5 mg twice daily. Audiometry test showed moderate to severe neuronal hearing loss and reduced speech recognition in both ears of the patient.