Aluminum Hydroxide Gels

At SPI Pharma, we provide a wide range of aluminum hydroxide gels varying in assay and viscosity to meet your formulation needs. We have successfully marketed viscous pastes globally for over 50 years.

Low Viscosity Gels

The low viscosity gels are easy to handle and pumpable with standard equipment. They can be shipped in drums, totes, and bulk container trucks. Due to the lower viscosity upon dilution to final formulation, the use of suspending agents and thickeners are recommended to achieve appropriate thickness for an antacid suspension. Our aluminum hydroxide pumpable gels also require less quantity to achieve finished dose, allowing for more concentrated formulations.

LV13 can be used together with our Flogel, magnesium hydroxide pumpable gel, to develop a cost effective antacid suspension with a pleasant mouthfeel. For more information about using Flogel and LV13 together, click below.

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High Viscosity Gels

Viscous aluminum hydroxide products, such as Visco 6 and Visco 9, are typically used in regular-strength antacid suspensions. These products yield thick and creamy formulations without requiring the use of additional thickeners or suspending agents. They can be dumped from drums with suitable equipment or pumped from the drum with specially designed pumps. Visco 6 has the same advantages as Visco 9, but is easier to transfer because it is pumpable. It can be delivered in drums, totes, and even bulk container trucks.

Visco 9 can be used with our Type M, magnesium hydroxide paste, to create a cost effective suspension with a pleasant mouthfeel. Click below for more information. 

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Product Name


% Assay as Al(OH)3

% Assay as Al2O3



Pumpable Gel



Low viscosity upon dilution with supernatant

Visco 9


NLT 13.6

NLT 8.9

High viscosity upon dilution, no supernatant

Visco 6

Pumpable Gel



High Viscosity upon dilution, no supernatant

Hyper 10

Pumpable Gel



Low viscosity upon dilution with supernatant

Hyper 12

Pumpable Gel

NLT 18.3

NLT 12.0

Low viscosity upon dilution with supernatant

Related Product Information

Related Applications

Ingredients for Antacids and Digestive Aids

Ingredients for Antacids and Digestive Aids

Antacid suspensions can be made from viscous pastes, pumpable gels, powders (preferably micronized) or preformulated products. Antacid tablets and Laxative suspensions can be made from powders, directly compressible (DC) ingredients or DC preformulated products.

Safety Data Sheets

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