Best Antacid Tablets 2026
TUMS Ultra Strength at $5.48 is the best antacid for most people — fast calcium-carbonate relief, widely available, and under $6 for 72 tablets. Rolaids Ultra Strength ($7.99) adds magnesium hydroxide to cut acid rebound if that's an issue for you.
See Today’s Price →At a Glance
Antacid Tablets Buying Guide
Antacid tablets are one of the most-bought OTC items in America, yet most people just grab whatever's on the shelf. The difference between products is bigger than you'd think — especially if you get heartburn regularly.
Calcium Carbonate vs. Dual-Action Formulas
TUMS uses calcium carbonate alone — fast-acting and adds a little calcium to your diet. Rolaids combines calcium carbonate with magnesium hydroxide, which slows acid rebound (the secondary wave of acid that sometimes follows a calcium-only antacid). If you need relief more than twice a week, Rolaids' dual formula usually performs better long-term.
Price Tier: What Count Gets You
Under $10: You're getting 72–120 tablets (TUMS Ultra at $5.48 for 72, Rolaids Ultra at $7.99 for 72). Good for occasional use. $10–20: Bulk counts (160–360 tablets) like TUMS 160-count at $9.98 or Rolaids 360-count at $18.89. Best per-tablet value for frequent users. The Rolaids 360-count works out to about 5 cents per tablet.
Who Should Buy What
For occasional heartburn after meals: TUMS Ultra 72-count at $5.48 is all you need. For frequent heartburn (more than 2x/week): Rolaids Ultra Strength — the magnesium helps prevent the acid-rebound cycle. For bulk buyers: Rolaids Extra Strength 360-count at $18.89 is the best per-tablet price on this list. Note: If you need antacids more than twice a week consistently, see a doctor — that pattern can indicate GERD rather than occasional indigestion.
What to Avoid
Generic "fruit flavored" antacids with outdated formulas often use lower-strength calcium carbonate — you need more tablets for the same effect. Also avoid antacid tablets if you're on a calcium-restricted diet (talk to your doctor). Don't take antacids within 2 hours of other medications — they can interfere with absorption.
“The go-to antacid for most households. Fast calcium carbonate relief, peppermint flavor, and under $6 — hard to beat.”
See Today’s Price →What we like
- Fast-acting
- adds calcium intake
- wide flavor range
- widely available
Watch out for
- No magnesium component
- possible acid rebound at high doses
“Rolaids' dual calcium+magnesium formula reduces the acid rebound that sometimes follows TUMS. Best everyday option at $7.99 for 72 tablets.”
See Today’s Price →What we like
- Dual-antacid formula
- mint flavor
- fast relief
Watch out for
- Smaller count per dollar vs larger packs
“330 tablets at $17.59 works out to about 5 cents per tablet — the best per-unit value on this list. Stock up and forget about it.”
See Today’s Price →What we like
- 330 tablets (most on this list)
- Best per-tablet price
- Assorted fruit flavors
- Standard 750mg Extra Strength
- One large bottle convenience
Watch out for
- Single large bottle (runs out all at once)
- Large container less portable
- Same calcium constipation note as TUMS
“Assorted fruit flavors make this the most palatable option for users who dislike mint. Same dual-action Rolaids formula at $4.99.”
See Today’s Price →What we like
- Calcium carbonate + magnesium hydroxide
- less acid rebound
- helps with gas
Watch out for
- Magnesium can cause loose stools at high doses
“160-tablet count at $9.98 is solid value for regular heartburn sufferers who prefer TUMS' pure calcium formula.”
See Today’s Price →What we like
- Larger count per bottle
- same ultra-strength formula
- good for frequent users
Watch out for
- Larger bottle less portable
“The magnesium hydroxide addition in Rolaids 120-count cuts acid rebound for users who get secondary heartburn 30 minutes later.”
See Today’s Price →What we like
- Calcium carbonate + magnesium hydroxide dual-action
- Magnesium offsets calcium constipation
- 120-count
- Trusted brand
- Consistent relief
Watch out for
- Mint only
- Higher per-tablet price than TUMS 2-pack
- Magnesium can cause loose stools with very frequent use
“360-count Extra Strength bulk bottle for frequent users who want to set-and-forget. Best value per tablet in the Rolaids lineup.”
See Today’s Price →What we like
- 360 count bulk size offers best per-tablet value
- Extra strength dual-antacid formula (calcium carbonate + magnesium hydroxide)
- Mint flavor preferred by most users
- Works on heartburn and gas simultaneously
Watch out for
- No individual packaging for on-the-go use
- Larger bottle may not travel easily
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