ALA is alpha lipoic acid. It is available in most vitamin stores, although most places sell it in large doses of 100 mg or more per capsule or tablet. For chelation ALA should be taken in a small dose(perhaps 25 mg?) every 3 hours for 3 days, then a rest for 3 or 4 days, then repeat this. Don't start taking ALA until 3 months after your last amalgams have been removed. You should also start taking something to fight candida(olive leaf extract, grapefruit seed extract, etc.) while you are having you amalgams removed, and keep taking it while chelating.


http://www.autistas.org/protocolo_andy.htm