Talk to your doctor before taking this medicine, if you:
- are allergic to ZY Q or any of the other ingredients of this medicine
- have an eye problem which affects the retina, inside of the eye (maculopathy) or you get a change in eye colour
- have liver or kidney problems
- have serious stomach or gut problems
- have heart problems
- have any problems with your blood
- have any problems with your nervous system or brain
- have psoriasis
- have a genetic condition known as glucose-6-dehydrogenase deficiency
- have a rare illness called porphyria