1 ing agent 2,3-dimercaptosuccinic acid (DMSA, succimer).

2 up to three 26-day courses of treatment with succimer, a lead chelator that is administered orally.

3 xidants, approved for human use (cysteamine, succimer, dimercaprol), were not efficacious.

4                                        Since succimer is as effective as any lead chelator currently

5                               Treatment with succimer lowered blood lead levels but did not improve s

6                  However, the children given succimer scored slightly better on the Developmental Neu

7 llow-up, the mean IQ score of children given succimer was 1 point lower than that of children given p

8  mean blood lead level in the children given succimer was 4.5 microg per deciliter (0.2 micromol per

9  placebo, and the behavior of children given succimer was slightly worse as rated by a parent.