SHEET /m/aluminium-hydroxide · PubChem CID 10176082 · REV 2026.07
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Aluminium hydroxide from source
AlH3O3 · 78.004 g/mol
ALUMINUM HYDROXIDE · Hydrated alumina · Amphojel · aluminum hydrate
Also sold as AlternaGEL, Amphojel from source
chemical compound
CategoryOTC medicine
Fig. 1 · 2D structure RDKit
[OH-].[OH-].[OH-].[Al+3]
Where you'll find it
Not yet mapped to everyday foods or products.
The dose makes the poison inferred
A reported rat oral LD50 for Aluminium hydroxide is 5,000 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
350.0 g
a median lethal dose scaled to 154 lb (350,000 mg)
“The dose makes the poison” is a cross-species estimate shown as neutral science, not a threshold anyone should act on. Real toxicity depends on the person, not body mass alone.
Toxicity & hazards
Toxicity · LD50
5,000 mg/kg · very low toxicity · LD50 rat oral from source
The dose lens above scales this to a body weight.
1 more reported value
- 1,100 mg/kgLD50 · other · rat
WarningIrritantH315, H319, H335from source