Warnings
Your heart may be adversely affected by hydroxychloroquine, particularly if you also take certain other medications, such as the antibiotic azithromycin (Z-Pak). If you experience sudden dizziness and a racing or pounding heartbeat, call for emergency medical help (like you might pass out).
Long-term or high-dose use of hydroxychloroquine may permanently harm the retina of your eye, leading to vision problems that cannot be reversed.
If you experience blurred vision, difficulty focusing, distorted vision, blind spots, difficulty reading, changes in your color vision, or increased sensitivity to light, stop taking hydroxychloroquine and contact your doctor right away.
