Natural heartburn relief in Canada with OBEX
Relief from reflux — without drugs.
ØBEX
OBEX forms a natural barrier to block acid. Works in 5-10 minutes. Made in Canada.
Reflux relief
that tastes like dessert.
ØBEX forms a natural barrier to stop acid reflux. Works in 5-10 minutes. No drugs. Just plant-based alginate in chef-developed flavours.
Choose Your Flavour
Three delicious options, each crafted to provide fast, natural heartburn relief.
Smooth Mint
Experience the crisp, cooling taste of smooth mint.
Lemon Meringue
Indulge in the bright tang of lemon meringue — zesty citrus balanced with smooth, sweet meringue.
Orange Cream
Savour the nostalgic blend of creamy vanilla and bright orange.
How it works
A barrier, not a drug.
Antacids neutralise acid and PPIs shut it off. ØBEX works mechanically — a plant-based raft that simply keeps acid where it belongs. Nothing is absorbed into your bloodstream.
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Real footage: the alginate raft forming on contact with acid
Take a teaspoon after meals
One 5 mL dose within 30 minutes of eating — or before bed for nighttime reflux. Ready to use, no mixing.
A barrier forms on top
Sodium alginate reacts with stomach acid and floats into a soft gel raft that sits over your stomach contents.
Acid stays down
The barrier physically blocks acid and food from refluxing into your esophagus. Most people feel relief in 5–10 minutes.
Fast Relief
Works in 5-10 minutes to soothe heartburn
Natural & Safe
Drug-free formula, safe during pregnancy
Chef-Made
Delicious flavours you'll actually enjoy
Made in Canada
Proudly crafted in Hamilton, Ontario
Why ØBEX?
OBEX uses medical-grade sodium alginate to form a natural protective barrier in your stomach, blocking acid from rising and causing heartburn. Unlike traditional antacids that neutralize acid or PPIs that reduce acid production, OBEX works mechanically—providing fast, safe relief without drugs or side effects.
Trusted by Canadians coast to coast.
100+ verified reviews · Longtime PPI users, expectant parents and singers among them
“Instant relief! So happy I no longer need to take “handfuls” of TUMS. OBEX is more effective!”
“Recommended by my ENT. So glad he recommended this. It works almost instantly and is so much better than anything chalky on the market! Worth its weight in gold.”
“After 30 years of on and off LPR, I can say that this is the best thing I have tried, and I have tried everything!”
Frequently Asked Questions
OBEX uses medical-grade sodium alginate derived from seaweed. When you take it after a meal, it reacts with your stomach acid to form a protective gel-like "raft" that floats on top of your stomach contents. This physical barrier prevents acid from rising into your esophagus, providing relief in as little as 5-10 minutes.
Supplement Facts
* Percent Daily Values based on a 2,000 calorie diet
** Daily Value not established
Other ingredients:
Water, Sugar, Natural Flavour, Polylysine
No artificial colors, no artificial preservatives, no complicated chemicals—just effective, natural heartburn relief.
Yes, OBEX is considered safe during pregnancy. Unlike PPIs and many other heartburn medications, alginate therapy works as a physical barrier without being absorbed into your bloodstream. Many pregnant women find it to be an effective and reassuring option. As always, consult your healthcare provider before starting any new supplement.
While antacids neutralize stomach acid (which can sometimes cause rebound acid production), OBEX creates a physical barrier that blocks acid reflux without interfering with your natural digestion. This means you get relief without the potential for "acid rebound" that can occur with traditional antacids.
For optimal results, take OBEX within 30 minutes after your meal. The alginate needs stomach acid to form its protective barrier, so taking it on a full stomach ensures the best effectiveness. Many people also take a dose before bed if they experience nighttime reflux.
OBEX is ready to use and does not require mixing. We recommend starting with 1 teaspoon (5 mL). If needed, you can safely take more based on your symptoms.
OBEX is available in three chef-crafted flavours: Lemon Meringue, Smooth Mint, and Orange Cream. Unlike other alginate products with challenging tastes, our formulations were developed by professional chefs to make your heartburn relief something you actually look forward to taking.
Great question! Real mint can relax the lower esophageal sphincter, and citric acid increases stomach acidity—both of which can worsen reflux. However, OBEX uses natural flavour oils, not actual mint leaves or citrus fruit. These flavour oils provide the pleasant taste without the compounds that trigger reflux symptoms. There's no citric acid in our formulations, so you get the enjoyable flavours without the reflux risk.
We ship across Canada with free shipping on orders of 6+ bottles. Most orders arrive within 3-7 business days depending on your location. All products are made fresh in Hamilton, Ontario and shipped directly to your door with tracking provided.
Yes, research shows that alginate therapy can be used as an add-on to existing treatments like PPIs. In fact, studies found that 72% of patients reported improved satisfaction when adding alginate to their PPI regimen. However, we recommend spacing out your doses and consulting with your healthcare provider.
Yes! We're proud to partner with McKnight's Pharmacy as our first retail location. You can find OBEX at both of their Hamilton stores: 685 Main St E (at Proctor) and 460 Main St E (at Ontario). Just stop by during pharmacy hours to grab your bottles—no shipping wait required!