Antimony and bismuth compounds in oncology.

The main group elements antimony and bismuth are used clinically, primarily for the treatment of Leishmaniasis (antimony) and ulcers (bismuth). Despite their medicinal efficacy, the exploration of the anti-cancer potential of antimony and bismuth compounds is not as well developed as for other metal-containing species. The results of cytotoxicity and anti-tumour screening for antimony(III), antimony(V) and bismuth(III) compounds are summarised in this review. While this is a relatively undeveloped field of research endeavour, promising anti-tumour activity has been reported, in particular for bismuth compounds.