It may have both an anti-spirochaete activity and an anti-inflammatory activity, similar to the treatment of rheumatoid arthritis. And caution is required if patients have certain heart conditions, diabetes, psoriasis etc. Treatment of chloroquine resistant falciparum malaria Uses for hydroxychloroquine Plaquenil and tsh Hydroxychloroquine in the treatment of anti-histamine refractory chronic spontaneous urticaria, randomized single-blinded placebo-controlled trial and an open label comparison study. Boonpiyathad T1, Sangasapaviliya A2. Hydroxychloroquine’s mechanism of action is not completely clear, but ii is likely related to Toll receptors. I am not aware of any interaction with bradykinin and bradykinin associated angioedema. The response to prednisone and rapidity of response suggests that the swelling is histamine dependent. 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. In children, dosage. The most serious adverse effects affect the eye, with dose-related retinopathy as a concern even after hydroxychloroquine use is discontinued. The most common adverse effects are a mild nausea and occasional stomach cramps with mild diarrhea. Hydroxychloroquine histamine Hydroxychloroquine Side Effects, Dosage, Uses, and More, Hydroxychloroquine and angioedema AAAAI Chloroquine combination therapyClinical pharmacokinetics and metabolism of chloroquine The more DAO is blocked while histamine production continues and histamine-rich foods are ingested, the worse the reaction for the patient. Symptoms. When the body reaches abnormally high levels of histamine, beyond the body’s ability to break down such an overload, a broad range of symptoms occur. Does Histamine Intolerance Cause Allergies & Headaches.. Hydroxychloroquine Oral Uses, Side Effects, Interactions.. Hydroxychloroquine - Wikipedia. Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as. I take antihistamines and Plaquenil plus many other meds, not sure about the colchicine. One thing to remember is that some medications we may currently take can perhaps make us drowsy, antihistamines on top may add to that. Antihistamine may well help with the itch after showering. Available forms Available by prescription only Tablets 200 mg 155 mg base Indications and dosages Suppressive prophylaxis of malarial attacks. Adults 400 mg of sulfate 310 mg base P. O. weekly on exactly the same day each week. Begin 2 weeks before entering the endemic area and continue for 8 weeks after leaving.