Likely Safe Medium confidence

Kirkland Signature Ultra Strength Antacid Calcium Carbonate 1000 mg Assorted Berry Flavors (265 Tablets) – Gluten-Free Chewables Guide

KIRKLAND ★★★★★ 4.6 · 2,976 reviews

Product data indicates gluten-free labeling with no explicit cross-contact details or certifications provided.

🌾 Gluten-free labeled ⚠ No 3rd-party cert
$13.95
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Celiac verdict
Likely safe
Confidence
Medium
Type
Supplements
Size
265 count (pack of 1)
Price tier
Mid
Read
5 min
✅ Why it works
  • High-dose calcium carbonate per tablet (1000 mg) for fast acid relief.
  • Large bottle quantity (265 tablets) offers long-lasting supply and perceived value.
  • Gluten-free labeling appears in product data tags.
  • Reported to work as well as name-brand antacids and at a lower price.
⚠ Keep in mind
  • Taste and texture mixed; some reviewers find it chalky.
  • Bottle quality complaints (broken/cracked bottles) referenced in reviews.
  • Flavor is berry-flavored and may not be preferred by all users.

Gluten safety details

Labeled gluten-free
Yes
Certifications
None documented
Ingredient risks
No explicit wheat/barley/rye/malt ingredients listed in provided data., Cross-contact information not provided in the supplied data.
Cross-contact notes
No cross-contact warnings or facility information provided in the supplied data.

Product data indicates gluten-free labeling with no explicit cross-contact details or certifications provided.

Cross-contact information not provided No explicit gluten-free certification (GFCO/NSF) evidenced in the data

What to expect

Two to three chewable tablets as symptoms occur, up to seven tablets in 24 hours. Each tablet provides 1000 mg of calcium carbonate for quick acid relief. Berry-flavored chewables come in a large bottle intended for long-term use.

👍 Best for
  • Acid indigestion relief
  • Heartburn relief
  • Calcium carbonate supplementation
👎 Not ideal for
  • Consumers seeking explicitly certified gluten-free certifications (GFCO/NSF) not evidenced in provided data
  • Individuals sensitive to taste/texture and who dislike chalky chews

The full guide

Product snapshot

Kirkland Signature Ultra Strength Antacid Calcium Carbonate 1000 mg chewables are gluten-free labeled, berry-flavored tablets. The bottle contains 265 tablets, and each tablet provides 1000 mg of calcium carbonate. The product is positioned for rapid heartburn relief as well as calcium supplementation, with a mid-range price point for a 265-tablet bottle.

How it works and who it’s for

Directions indicate two to three chewable tablets as symptoms occur, up to a maximum of seven tablets in 24 hours. The core active ingredient is calcium carbonate (1000 mg per tablet), designed to provide fast acid relief. This product is best for acid indigestion and heartburn relief, as well as calcium carbonate supplementation. Gluten-free labeling is present in product data, but explicit cross-contact details are not provided.

Taste, texture, and packaging

Taste and texture are mixed in user reviews, with some finding the chewables chalky. Berry flavors are part of the product’s profile, but flavor preference varies among individuals. The large 265-tablet bottle is noted as a potential value, though some reviewers mention bottle-quality concerns like breakage or cracking.

Gluten safety, certifications & labeling

The product is labeled gluten-free according to the provided data. There are no explicit GFCO/NSF or other third-party certifications evidenced in the data. Cross-contact information is not provided, and the celiac suitability is described as likely_safe based on labeling, with medium confidence due to lack of certification details.

Value, comparisons, and best uses

Value-wise, the bottle offers 265 tablets for a listed price of $13.95, which translates to roughly $0.05 per tablet. In category terms, it competes with other 1000 mg calcium carbonate chewables like Tums Ultra Strength. Its differentiators include the large bottle size and gluten-free labeling in the data, as well as berry-flavored chews.

What shoppers say

💚 People liked

⚠ People flagged

Taste/texture can be chalky or less favorable for some.
Packaging/bottle quality concerns mentioned by customers.
Flavor variety may not suit everyone’s preference.

Key takeaways

  • 265-tablet bottle offers long-term supply.
  • Each tablet delivers 1000 mg calcium carbonate for quick relief.
  • Gluten-free labeling is indicated, but third-party certifications are not evidenced.
  • Taste and bottle quality may vary by user; chalky texture is a common comment.
How we assess this: Gluto summarizes manufacturer labeling, listing data, and community signals — it is not a medical guarantee. Always read the current label and confirm with the manufacturer before purchase, especially for celiac disease.

Evidence gaps for this product:
  • No explicit gluten-free certification information (GFCO, NSF) evidenced in provided data
  • Cross-contact/facility handling details not provided
  • Complete ingredient list and allergen declarations beyond general flavoring not available in the supplied data
Likely Safe Kirkland Signature Ultra Strength Antacid Calcium Carbonate 1000 mg Assorted Berry Flavors (265 Tablets) – Gluten-Free Chewables Guide $13.95
Buy on Amazon →