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. Hydroxychloroquine lichen planopilaris When was chloroquine discovered Taking plaquenil and breastfeeding How to quit taking hydroxychloroquine Oct 01, 2018 Mechanism of Action Chloroquine, a 4-aminoquinoline, is an anti-protozoal agent. The precise mechanism by which Chloroquine exhibits activity is not known. Chloroquine, may exert its effect against Plasmodium species by concentrating in the acid vesicles of the parasite and by inhibiting polymerization of heme. It can also inhibit certain. Find information about common, infrequent and rare side effects of Chloroquine Oral. Apr 23, 2019 An allergic reaction to a pain medication also can cause itching. Managing itching. If your itching gets worse or you develop other signs of an allergic reaction, such as trouble breathing or hives, call your doctor immediately. Allergic reactions can be potentially serious. To ease mild itching, you can 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. Itchiness side effect of chloroquine An Allergist Explains Why You Might Have Itchy Skin All Over., Common and Rare Side Effects for Chloroquine Oral Sunspots and plaquenil Compare Chloroquine vs Hydroxychloroquine head-to-head with other drugs for uses, ratings, cost, side effects, interactions and more. Chloroquine rated 10.0/10 vs Hydroxychloroquine rated 6.7/10 in overall patient satisfaction. Chloroquine vs Hydroxychloroquine Comparison -. Itching A Side Effect of Treatment. Common and Rare Side Effects for Chloroquine Injection. Find patient medical information for Chloroquine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. 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. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about. 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 you or do not go away Belly pain. Stomach cramps. Not hungry.