Key takeaways:
Tums (calcium carbonate) are popular over-the-counter (OTC) antacids that can quickly relieve heartburn. They come in a variety of doses and flavors.
The recommended Tums dosage is typically 2 to 3 tablets or chews as needed for symptoms. But this can vary depending on what form of Tums you’re taking. Be sure to check the label and follow the instructions for your specific product.
People who have chronic kidney disease should ask a healthcare professional before taking Tums. If you take other medications, ask your pharmacist to check for potential interactions.
Tums are available as brand-name medications. But you can also find them as lower-cost generics. If a healthcare professional writes you a prescription for OTC Tums, GoodRx can help save you money.
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Tums (calcium carbonate) is one of the most well-known antacids on the market. You may even have a bottle of this over-the-counter (OTC) product in your medicine cabinet. It’s a popular choice for heartburn relief, since it works fast and is safe for most adults.
But Tums comes in several different forms, and they don’t all contain the same amount of medication. So it’s important to know how much is safe to take. Here’s a guide to the recommended Tums dosages for adults.
Note: The labeling for Tums doesn’t provide dosage information for children under age 12. Discuss safe antacid options with your child’s pediatrician. The same active ingredient in Tums (calcium carbonate) is made for kids in other OTC products, such Pepto Kids.
What’s the typical Tums dosage for adults and adolescents?
All Tums products (and their generic versions) contain the antacid calcium carbonate. But the amount of medication per tablet varies between products. There’s also a combination product that combines this antacid with a medication for gas relief.
Regardless of which Tums product you choose, it’s important to stay within the maximum daily limit. If you take a daily calcium supplement or a multivitamin that contains calcium, check with your prescriber or pharmacist about how many Tums is safe for you. And if you’ve been taking Tums for more than 2 weeks, it’s time to speak with a healthcare professional for guidance.
Let’s take a look at the recommended dosage for some common Tums products.
Dosage for Tums Regular Strength 500
Each Tums Regular Strength tablet contains 500 mg of calcium carbonate. The recommended dosage of Tums Regular Strength is to chew 2 to 4 tablets as needed when you experience heartburn. Don’t take more than 15 tablets per day (10 tablets if pregnant).
Dosage for Tums Extra Strength 750
Each Tums Extra Strength tablet contains 750 mg of calcium carbonate. The recommended dosage of Tums Extra Strength is to chew 2 to 4 tablets as needed when heartburn symptoms occur. Don’t take more than 10 tablets per day (6 tablets if pregnant), although this amount may vary between flavors.
Tums Extra Strength also comes in several other forms. Each also contains 750 mg of calcium carbonate per tablet. These include:
Tums Extra Strength 750 Smoothies: These tablets feel less chalky than the original tablets.
Tums Chewy Bites: These tablets have a chewy texture that’s similar to fruit chew candies. Unlike other extra-strength products, both pregnant and non-pregnant adults shouldn’t take more than 6 Tums Chewy Bites per day.
Dosage for Tums Ultra Strength 1000
Each Tums Ultra Strength tablet contains 1,000 mg of calcium carbonate. The recommended dosage of Tums Ultra Strength is to chew 2 to 3 tablets as needed for heartburn. Don’t take more than 7 tablets per day (5 tablets if pregnant).
Other Tums products that contain 1,000 mg of calcium carbonate per tablet and have similar dosage instructions include:
Tums Naturals: These tablets contain no artificial flavors or dyes.
Tums Chewy Bites Cooling Sensation: These chews create a cold feeling in your throat and esophagus (food pipe) after you chew and swallow them. Unlike other products in this group, you shouldn’t take more than 4 Tums Chewy Bites with Cooling Sensation per day.
Dosage for Tums Chewy Delights
Tums Chewy Delights contain 1,177 mg of calcium carbonate per chew. This product has a texture similar to taffy. So be careful if you wear dentures or have braces or other dental devices.
The recommended dosage of Tums Chewy Delights is 2 to 3 chews as needed for heartburn. Don’t take more than 6 chews per day (4 chews if pregnant).
Dosage for Tums Chewy Bites with Gas Relief
Tums Chewy Bites with Gas Relief contain 750 mg of calcium carbonate and 80 mg of simethicone (an anti-gas medication) per chew. It might be helpful if you have heartburn along with gas or bloating.
The recommended dosage of Tums Chewy Bites with Gas Relief is to 1 to 2 chews as needed for symptoms. Don’t take more than 6 chews per day (same if pregnant).
Are there any dosage adjustments for medical conditions?
We’ve already mentioned above that the maximum daily dose of most Tums products is typically lower if you’re pregnant. But there are other times when you may need a dosage adjustment. This includes if you’re living with chronic kidney disease or take medications that contain calcium or interact with Tums.
People with chronic kidney disease
People living with chronic kidney disease (CKD) should talk with their healthcare team before taking Tums. The kidneys are responsible for balancing multiple minerals, including calcium. Taking extra calcium could lead to problems if your kidneys aren’t working as well as they should. Your prescriber can let you know if you need a lower Tums dosage or if a different heartburn medication is safer for you.
Potential interactions
Tums can prevent some medications from being absorbed properly, which could make them less effective. You can usually still take Tums when an interaction is present. But you may need to separate it from other medications by a few hours. Review your current medication list with your healthcare team before taking Tums. They can let you know if there are any interactions you should know about.
What happens if you miss a dose of Tums?
You typically take Tums as needed when symptoms occur. So missing a dose isn’t usually a major concern. You can just take another dose when you need it. Just be sure to follow the maximum daily dosage limit. Taking more Tums than recommended can raise the risk of side effects, such as constipation or kidney damage.
What should you do if you take too many Tums?
Tums are generally safe for most people if you follow the directions and stay within the daily limit. But taking too many Tums can lead to problems such as muscle weakness, kidney stones, and heart rhythm problems. This is more likely if you take high doses of Tums for a long period of time.
If you think you’ve taken too many Tums, contact your healthcare team for guidance. You can also call Poison Control at 1-800-222-1222. If you develop any symptoms that feel severe or life-threatening, seek emergency care right away.
How to save on Tums
Tums products are available as both brand-name and generic medications. GoodRx can help you save over 60% off the average retail price of Tums with a free discount. But keep in mind that you’ll need a prescription from a healthcare professional in order to use this discount at your local pharmacy, even though Tums is an OTC medication.
You can pay as little as $14.02 for 72 tablets of Tums Ultra Strength with a free GoodRx discount. And with a GoodRx Companion subscription, over 250 medications (including certain forms of Tums) are available for free, with hundreds more under $10. This program also includes savings on telehealth visits, dental care, and other health services.
The bottom line
Tums (calcium carbonate) are a popular over-the-counter antacid for quick heartburn relief. The recommended Tums dosage is typically 2 to 3 tablets or chews as needed for symptoms. But this can vary depending on what form of Tums you’re taking.
Don’t take more than the recommended daily amount of Tums as listed on the package label. If you take other forms of calcium or are pregnant, you may have a lower maximum daily limit.
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References
American Association of Orthodontists. (2025). What can I eat with braces? A comprehensive guide.
Haleon. (2024). Tums antacid chewy bites- calcium carbonate 750 mg tablet, chewable [package insert]. DailyMed.
Haleon. (2024). Tums chewy bites- calcium carbonate tablet, chewable [package insert]. DailyMed.
Haleon. (2024). Tums chewy delights- calcium carbonate bar, chewable [package insert]. DailyMed.
Haleon. (2024). Tums ex- calcium carbonate tablet [package insert]. DailyMed.
Haleon. (2024). Tums extra strength, smoothies- calcium carbonate tablet, chewable [package insert]. DailyMed.
Haleon. (2024). Tums extra strength sugar-free- calcium carbonate tablet, chewable [package insert]. DailyMed.
Haleon. (2024). Tums regular strength- calcium carbonate tablet, chewable [package insert]. DailyMed.
Haleon. (2025). Tums naturals- calcium carbonate tablet, chewable [package insert]. DailyMed.
Haleon. (2026). Tums ultra- calcium carbonate tablet, chewable [package insert]. DailyMed.
Haleon. (2026). Tums chewy bites with gas relief- calcium carbonate and simethicone tablet, chewable [package insert]. DailyMed.
MedlinePlus. (2024). Calcium carbonate.
National Kidney Foundation. (n.d.). Kidney failure risk factor: Serum calcium.
