Who Makes Tums?
Tums is made by Haleon plc, the consumer healthcare company that inherited the brand from GSK in the 2022 demerger. Tums is manufactured in St. Louis, Missouri.
Quick Answer
Tums is made by Haleon plc. The brand has been produced continuously in St. Louis, Missouri since 1930, first by the Lewis-Howe Company, then by SmithKline Beecham, then GlaxoSmithKline, and now Haleon.
Tums is a chewable calcium carbonate antacid. Calcium carbonate is inexpensive and sourced globally, but Tums tablet compression and flavor blending are still done at the historic St. Louis plant.
The Parent Company
Haleon plc is a UK-listed consumer healthcare company created out of the GSK-Pfizer consumer health joint venture and spun off from GSK in July 2022. It owns Advil, Sensodyne, Panadol, Voltaren, Centrum, Robitussin and Tums, among many others.
Tums generates several hundred million dollars in annual sales for Haleon and is one of the top three antacid brands in the United States.
How Tums Started
Tums was invented in 1928 by James Howe, a St. Louis pharmacist. Howe originally created the calcium carbonate lozenge to help his wife with stomach upset. He founded the Lewis-Howe Company to sell it and launched the product commercially in 1930.
Lewis-Howe was acquired by Norcliff Thayer in 1978, which was then acquired by SmithKline Beckman (later SmithKline Beecham, then GSK). Tums has stayed with the same corporate lineage ever since, ending up at Haleon in 2022.
Where Tums Is Made
The Tums manufacturing plant is still in St. Louis, Missouri, on the same site the Lewis-Howe Company built. It is now a modern Haleon facility with several hundred employees running high speed tablet presses and packaging lines.
Calcium carbonate feedstock is sourced from mines in the United States and quarried limestone from Europe. Flavor systems (Peppermint, Wintergreen, Tropical Fruit, Assorted Berries) are blended in-plant.
What Is Inside Tums
The active ingredient in every Tums is calcium carbonate. A regular strength tablet contains 500 milligrams of calcium carbonate, delivering about 200 milligrams of elemental calcium. Extra Strength (750 mg) and Ultra (1000 mg) versions scale up from there.
Inactive ingredients include sucrose, corn starch, talc, mineral oil, natural and artificial flavors and coloring. Some varieties add sodium and sugar substitutes.
How Tums Compares To Rivals
Direct calcium carbonate rivals include Rolaids (owned by Sanofi's Chattem division after being sold by Johnson & Johnson) and store brand calcium carbonate tablets (Equate, Up & Up, Kirkland Signature).
Other antacid categories include H2 blockers like Pepcid (famotidine, sold by J&J's consumer arm) and proton pump inhibitors like Prilosec OTC (owned by Haleon's rival Procter & Gamble). Tums works fastest of the three because it neutralizes acid on contact rather than reducing acid production.
How To Trace Any Product Back To Its Manufacturer
- Read the fine print on the label. US and EU packaging law requires either the manufacturer name or a "distributed by" address. That is your starting point.
- Search the company's SEC filings. Public parent companies list subsidiaries and manufacturing sites in their 10-K annual reports.
- Check the FDA or USDA establishment number. For food, drugs and cosmetics, the plant of origin can often be looked up in public regulatory databases.
- Follow the money. Press releases about acquisitions and joint ventures are the fastest way to spot who really controls a brand today.
Frequently Asked Questions
Is Tums American made? Yes. Tums has been manufactured in St. Louis, Missouri since 1930.
Who owns the Tums brand? Haleon plc, since the July 2022 demerger from GSK.
Is Tums the same as Rolaids? Both are chewable antacids, but they use different calcium and magnesium blends. Tums is calcium carbonate only. Rolaids adds magnesium hydroxide.
Can Tums be used as a calcium supplement? Each regular strength Tums has about 200 milligrams of elemental calcium. Some doctors recommend Tums as a low cost calcium source, but check with your doctor first, especially if you have kidney concerns.
What This Means For The Shopper
When you understand who actually makes Tums, a few practical shopping habits fall into place. First, corporate ownership tells you where product safety recalls and reformulations come from. Second, it tells you which store brand alternatives are chemically or functionally equivalent, because generic makers usually target the same reference product. Third, it explains pricing behavior: brands owned by big consumer conglomerates rarely drop below a floor price for long, because that floor protects a very large marketing and distribution investment.
Corporate ownership also shifts over time. The same brand you grew up with may be on its third or fourth parent company. That is why any answer to "who makes Tums" should be dated. The current parent listed on the label today is the one legally responsible for the product, regardless of the packaging design or advertising campaign you remember from years ago.
If you want to double check, the fastest confirmation is the label itself. Look for the "Distributed by" or "Manufactured by" line in the fine print. The company name and city on that line is the current legal manufacturer or distributor of Tums for your market, and that is the entity you would contact for a product complaint, safety concern or ingredient question.
What To Watch Going Forward
Consumer packaged goods ownership keeps consolidating. In the last five years alone, several major consumer health and beverage brands have moved between parent companies through spin-offs, sales and joint ventures. Expect more of the same over the next five years, especially as private equity and family holding companies continue to reshape mid-cap consumer brands.
If you buy Tums regularly and care about who profits from your purchase, it is worth checking the label every year or two. Ownership changes are usually announced in trade press but rarely make consumer headlines, so most shoppers miss them until the packaging gets a subtle redesign to reflect the new parent company.
Bottom Line
Tums has been made in St. Louis for almost 100 years and is now owned by Haleon. The formula is simple calcium carbonate. Store brand versions at the same strength are the same medicine at a lower price.