Hydroxychloroquine and pre-existing conditions might not mix well.

It's crucial for patients to discuss taking hydroxychloroquine with their doctor if they already have eye issues, particularly those involving the retina, because this medication has the potential to cause visual changes or loss of vision.

Before taking hydroxychloroquine, patients with diabetes, psoriasis, kidney disease, liver disease, blood or bone marrow problems, muscle problems, stomach or bowel problems, and/or nerve problems should consult with their doctor.

Furthermore, there is always the possibility of negative drug interactions, so it is critical to consult with your doctor to determine whether this drug will cause problems if combined with your current medications.