Scientific Answer
- Allopurinol blocks xanthine oxidase
- This enzyme makes uric acid
- Uric acid levels fall
- Crystal formation is reduced
- Gout attacks become less frequent
Simple English explanation with example
- Too much uric acid causes gout
- Crystals form in the joints
- Allopurinol stops excess uric acid
- Painful attacks happen less
- Like preventing ice from forming

