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. Citalopram and hydroxychloroquine Anti malaria medication plaquenil What does chloroquine do in gel Plaquenil brand Anyone have stomach pain after taking their plaquenil? I took my first dosage on Sunday and my stomach hurt so bad I could hardly stand it. I drank milk but it still hurt. Now I'm scared to take any more. I want to feel better but not at that cost. I've gradually have become sensitive to dairy but the last few days, it all but kills me. I've been on Plaquenil for almost 2 wks now and I'm also taking Prednisone, could one of these be causing my extreme stomach cramps? 2 nights ago, I had a cheeseburger and mac and cheese and I thought I was going to Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more. 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. Plaquenil stomach problems Plaquenil hydroxychloroquine Basics, Side Effects., Immune & Autoimmune - Lupus Plaquenil and stomach issues. Is there a difference between plaquenil and genericHydroxychloroquine sulfate 200 mg dosageWhere to buy chloroquine and proguanilWhat durg class is chloroquine How to use Plaquenil. Hydroxychloroquine is usually taken with food or milk to prevent stomach upset. The dosage and length of treatment are based on your medical condition and response to therapy. Plaquenil Oral Uses, Side Effects, Interactions, Pictures.. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Hydroxychloroquine Oral Uses, Side Effects, Interactions, Pictures.. Side Effects Nausea, stomach cramps, loss of appetite, diarrhea, dizziness, or headache may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Remember. If I am still having heartburn and stomach pain I add Pepcid AC and phyzme. I know for me part of the problem is all the meds I take in addition to Plaquenil, prednisone and a host of others. A more pleasant stomach calmer is anise, black licorice. Also I use only lactade free milk. I hope this helps some. I've been taking Plaquenil for one month 1 x 200 mg. I should have taken 2 x 200 mg but from the beginning I had diarrhea and stomach pain. If I want to increase the Plaquenil my complaints get worse.