What are the contraindications for purpurex?

Purpurex, which contains the active ingredient methylene blue, is contraindicated in individuals with hypersensitivity to the drug, those with glucose-6-phosphate dehydrogenase (G6PD) deficiency, and patients with severe renal impairment. It should also be avoided in individuals taking serotonergic drugs due to the risk of serotonin syndrome. Additionally, it is contraindicated in pregnant women unless the benefits outweigh the risks. Always consult a healthcare provider for specific medical advice.