Human Exogenous Binders

A “binder” is not automatically a general detoxifier. Some are highly specific medical antidotes, while others act mainly inside the gastrointestinal tract.

#	Binder	What It Binds / Removes	Main Evidence/Use
1	Activated charcoal	Many drugs, organic poisons, plant toxins	Acute GI poisoning
2	AST-120 (spherical carbon)	Indoxyl sulfate precursors, other uremic toxins	Human clinical studies
3	Prussian blue	Cesium, thallium	Established antidote
4	Cholestyramine	Bile acids; interrupts enterohepatic recycling of some compounds	Established human drug
5	Colesevelam	Bile acids	Established human drug
6	Colestipol	Bile acids	Established human drug
7	Calcium disodium EDTA	Lead and some other divalent metals	Established chelation therapy
8	Succimer (DMSA)	Lead, arsenic, mercury	Human chelation
9	Dimercaprol (BAL)	Arsenic, mercury, gold; selected lead poisoning	Human antidote
10	Penicillamine	Copper; also some metals	Wilson disease / selected metal poisoning
11	Trientine	Copper	Wilson disease
12	Deferoxamine	Iron; also aluminum	Established chelator
13	Deferasirox	Iron	Established iron chelator
14	Deferiprone	Iron	Established iron chelator
15	DTPA (Ca/Zn-DTPA)	Plutonium, americium, curium	Radionuclide contamination
16	Sodium thiosulfate	Cyanide; some sulfur-reactive toxicants	Specific antidotal use
17	Hydroxocobalamin	Cyanide	Converts cyanide to cyanocobalamin
18	Digoxin immune Fab	Digoxin/digitalis	Highly specific antidote
19	Calcium montmorillonite / NovaSil	Especially aflatoxin B1	Human mycotoxin studies
20	Diosmectite (smectite clay)	GI toxins/irritants; microbial products	Human GI evidence
21	Enterosgel / polymethylsiloxane polyhydrate	Various intestinal toxic compounds	Human enterosorbent evidence
22	Zeolite / clinoptilolite	Primarily cations through adsorption/ion exchange; proposed metal binding	Limited human toxicant evidence
23	Bentonite clay	Strongest evidence for adsorption of some mycotoxins, especially aflatoxin	Mostly experimental; some human food studies
24	Chlorella	Proposed binding of some metals/toxicants	Limited human evidence
25	Modified citrus pectin	Proposed binding/excretion of some metals	Limited human studies
26	Alginate	Can bind certain metals/cations in GI tract	Experimental/human nutritional evidence
27	Pectin	Can interact with some metals and bile-related compounds	Limited human evidence
28	Chitosan	Lipids, bile acids and some metal ions	Human nutritional/experimental evidence
29	Saccharomyces-derived cell-wall binders	Some mycotoxins, including aflatoxin/zearalenone	Human/animal evidence varies
30	Probiotic/yeast-cell-wall preparations	Selected mycotoxins through adsorption	Primarily food/mycotoxin research

The Most Important Distinction

There are really three different classes here:

A. GI Adsorbents/Sequestrants

Activated charcoal, AST-120, cholestyramine, colesevelam, colestipol, montmorillonite, diosmectite, Enterosgel, etc. These primarily work inside the intestine rather than pulling toxins directly out of tissues. Activated charcoal, for example, can adsorb many drugs and organic poisons but does not reliably bind metals such as iron or lithium.

B. Specific Chelators

EDTA, DMSA, dimercaprol, deferoxamine, deferasirox, deferiprone, penicillamine and trientine. These are systemically active medicines and should not be treated as general-purpose detox supplements.

C. Highly Specific Antidotal Binders/Scavengers

Prussian blue, DTPA and digoxin immune Fab are particularly important because their targets are highly specific. Prussian blue, for example, is used for thallium and radioactive cesium rather than as a general toxin binder.

Particularly Strong Human-Evidence Group

If the goal is to identify the most defensible human binders, I would put these near the top:

• Activated charcoal — selected acute ingestions
• Prussian blue — thallium/cesium
• Calcium disodium EDTA — lead
• Succimer/DMSA — lead and selected metals
• Deferoxamine — iron
• DTPA — plutonium/americium/curium
• Digoxin immune Fab — digoxin
• Cholestyramine — bile acids/enterohepatic interruption
• AST-120 — uremic toxin precursors
• Calcium montmorillonite/NovaSil — aflatoxin-related binding evidence

The evidence is not equivalent across these 10: some are established antidotes for specific poisonings, whereas others are intestinal sorbents with narrower evidence.

Cholestyramine deserves special attention because it is a genuine human intestinal sequestrant. It binds bile acids in the intestinal lumen and prevents their reabsorption; bile-acid sequestrants can also interfere with absorption of numerous medications.