Antacid Actives
SPI Pharma is the global leader in immediate-relief antacid actives. We specialize in aluminum, magnesium, and calcium products, as well as preformulated solutions for the production of antacid suspensions and tablets. All facilities meet cGMP requirements for APIs and finished dosage forms (FDFs), also known as semi-finished drugs. When the product is compendial, it meets or exceeds the appropriate USP and/or EP pharmacopoeia specifications. With manufacturing locations in the US and France, SPI Pharma provides security of supply at the highest quality standards through dual sourcing. We work to exceed the expectations for each customer, every time.
Product Selection Guides
Are you making an antacid tablet or suspension? Perhaps your formulation requires a laxative effect or calcium carbonate?
Your next step will be to determine which products best suit your formulation needs by clicking on the Product Selection Guides links below. Additionally, more detailed information can be found in the appropriate product sections of our website. As always, our sales and technical teams are ready to assist you with any questions that arise. Your journey to formulation success starts here.
Antacid Tablet
Antacid Suspension
Magnesium Hydroxide-Based Laxative

Available Products
Preformulated Solutions
SPI Pharma offers preformulated products for immediate relief antacid tablets and suspensions, providing simple, quick, cost effective processes for manufacturers and a pleasant patient experience through improved taste and mouthfeel. Preformulated solutions reduce the number of manufacturing steps required; preserving equipment, saving time, and reducing error potential.
Aluminum Hydroxide Gels and Powders
Our line of aluminum hydroxide gels and powders is available worldwide and provides the consistent quality required for pharmaceutical antacid suspensions and tablets.
Magnesium Hydroxide Powders
We can create a specialty powder by processing our magnesium hydroxide powders with the necessary excipient or excipients for your formulation needs.
Magnesium Hydroxide Pastes and Gels
Our line of magnesium hydroxide pastes and gels is available worldwide and provides the consistent quality required for pharmaceutical antacid suspensions and tablets.
Aluminum and Magnesium Specialty Products
Beyond our product portfolio of aluminum hydroxide and magnesium hydroxide, we offer specialty products to meet your needs. Explore our comprehensive range of products including aluminum hydroxide magnesium carbonate powders, aluminum phosphate gel, boehmite gel, and magaldrate gels and powders for your specific antacid formulations.