Yes, basically.

Algin is a gel which is extracted from certain kinds of brown algae. It is a polysaccharide which is known for it's ability to bind with certain heavy metals.

I use Algin from Nature's Sunshine Product (of which I am a distributor) but they discontinued it about a year ago, much to my disappointment. when I found out they were not going to carry it anymore, I bought a whole bunch of it (several years worth).

I spent about 10 minutes (just now) searching the web for algin and finally found it in an herbal combination.

Just search on Google for "algin" and you should be able to come up with something. It may take a little time but will be worth it.