Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine and call your doctor at once if you have trouble focusing, if you see light streaks or flashes in your vision, or if you notice any swelling or color changes in your eyes.

Call your doctor at once if you have:

headache with chest pain and severe dizziness, fainting, fast or pounding heartbeats;
very slow heart rate, weak pulse;
muscle weakness, numbness or tingling;
low blood sugar--headache, hunger, sweating, irritability, dizziness, nausea, fast heart rate, and feeling anxious or shaky; or
low blood cell counts--fever, chills, sore throat, weakness or ill feeling, swollen gums, mouth sores, skin sores, rapid heart rate, pale skin, easy bruising, unusual bleeding, feeling light-headed.
Common side effects may include:

headache, dizziness, ringing in your ears;
nausea, vomiting, stomach pain;
loss of appetite, weight loss;
mood changes, feeling nervous or irritable;
skin rash or itching; or
hair loss.

C'mon safe Brilacidin!!!!