Which of the following metals can be used in the treatment of rheumatoid arthritis?

Correct answer: (b) Gold

Explanation

Compounds of gold have been used to treat rheumatoid arthritis. This is called chrysotherapy: gold salts such as sodium aurothiomalate and auranofin reduce inflammation and slow joint damage. Newer drugs have now largely replaced them.

Other metal medicines: platinum (cisplatin) against cancer, iron for anaemia, and lithium salts for bipolar disorder.