LOW ACID LAUNCH: SAVE UP TO 20% + FREE SHIPPING · Ends tonight at midnight
Lab tested pH 5.75 to 5.97

5 Reasons Your Stomach Hates Coffee, And Why Low Acid Fixes It

It was never the caffeine. Standard coffee sits around pH 4.8, acidic enough to burn a lining, trigger reflux and wear enamel. Tieman's Fusion is tested up to pH 5.97, so you keep the ritual and lose the damage.

★★★★★4.9/5 from 2,400+ verified coffee drinkers
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Tieman's Fusion Dark Roast bag on a stone wall above a mountain forest at golden hour
pH 5.97Tieman's Dark Fusion
lab tested acidity
pH 4.8Standard coffee
where the burn starts
Morning heartburnBurning empty stomachAcid reflux at 9amEnamel erosionAntacids in the desk drawerCoffee you gave upMorning heartburnBurning empty stomachAcid reflux at 9amEnamel erosionAntacids in the desk drawerCoffee you gave up
The Real Culprit

You Did Not Outgrow Coffee. You Outgrew The Acid.

Switching to decaf, adding oat milk, drinking it cold: none of it changes the number that actually causes the problem. Here is what acidic coffee is doing every single morning.

Reflux & heartburn

Low pH relaxes the valve at the top of the stomach, letting acid climb where it does not belong.

That hollow, queasy gut

The first cup on an empty stomach is the one that hurts. Acid hits a lining with nothing to buffer it.

Enamel wearing thin

Anything below pH 5.5 starts to soften tooth enamel. Two cups a day is a lot of exposure.

Spike, then crash

Acid plus raw caffeine gives you the jolt and the 2pm collapse that costs you a third cup.

Reason 01The pH number that changes everythingReason 02How the acid actually comes downReason 03What changes in the first 14 daysReason 04It still tastes like real coffeeReason 05You risk absolutely nothing
The Switch

5 Reasons To Go Low Acid This Week

Not a coffee substitute. Not a mushroom powder. Real 100% Arabica, fused so the acid comes down and your morning stops costing you something.

Reason 01

Standard Coffee Is pH 4.8. Fusion Tests Up To 5.97.

pH is a logarithmic scale, so that gap is not a rounding error. Every full point is a tenfold change in acidity. Tieman's Fusion is lab tested between pH 5.75 and 5.97 depending on roast, which puts every roast above the pH 5.5 line where enamel erosion begins.

  • Drink it black, on an empty stomach, without bracing for it
  • No milk, no antacid and no baking soda hacks to cut the burn
  • Every roast tests above the enamel threshold, decaf included
Acidity is printed on every bag. We are the only ones who want you comparing numbers.Tieman's Fusion, roasted in the USA
pH 5.75 to 5.97
Lab tested acidity by roast, versus roughly pH 4.8 for standard coffee
More acidicpH 5.5Gentler
Dark5.97
Medium5.84
Decaf5.75
The back of a Tieman's Fusion bag showing the printed table of pH, caffeine and antioxidant levels for Decaf, Medium and Dark
Not our chart. This table is printed on the back of every bag.
Reason 02

Low Acid Is Engineered, Not Marketed

Most brands that say “smooth” just roast darker and hope you stop asking. The Fusion Process blends 100% Arabica with three functional botanicals: ceremonial grade Japanese matcha, South African rooibos and Himalayan goji berry. That is how the cup lands gentler while still drinking like coffee.

  • Rooibos, a naturally caffeine free red tea long used to settle the stomach
  • Ceremonial matcha, shade grown and hand picked, for calm and focused energy
  • Goji berry, the Himalayan superfood used for stamina and endurance
  • Fused into the grounds, not sprayed on top, so nothing settles at the bottom
1
Source100% Arabica from Central and South America, graded for a clean, low bitterness cup.
2
FuseMatcha, rooibos and goji are blended into the grind so every scoop is consistent.
3
RoastRoasted by a Los Angeles house with 100+ years of sourcing behind it.
4
TestAcidity, caffeine and antioxidant levels measured, then printed on the bag.
Reason 03

Most People Feel The Difference In Under Two Weeks

You do not have to give up coffee to find out. Swap your everyday cup, change nothing else, and let your stomach report back. The pattern our customers describe is remarkably consistent.

  • The morning burn is usually the first thing to go
  • Black coffee becomes drinkable again, no milk required
  • Afternoons flatten out instead of falling off a cliff
Day 1
Same ritual, quieter finishBrews like your usual coffee. Most people notice the absence of the sharp aftertaste first.
Day 3
Empty stomach, no bracingThe pre-breakfast cup stops being the one you regret.
Day 7
Antacids untouchedThe most common message we get is that the drawer stash went unused all week.
Day 14
Steadier afternoonsMatcha theanine smooths the caffeine curve, so 2pm stops being a cliff.
Reason 04

The Part Every Healthy Coffee Gets Wrong

Low acid usually means thin, flat and vaguely herbal. Fusion is roasted by a house with over a century of sourcing and roasting behind it, so what lands in the cup is rich, full bodied and unmistakably coffee. No grassy finish. No compromise you have to talk yourself into.

  • Works in drip, pour over, French press and most espresso setups
  • Ground fresh in 10oz bags, so no grinder and no extra step
  • Three roasts, including a decaf people actually finish
Dark Fusion bag
Dark FusionBold, full bodied · pH 5.97 · 71.11mg caffeine
Medium Fusion bag
Medium FusionSmooth, balanced · pH 5.84 · 68.66mg caffeine
Semi Dark Decaf Fusion bag
Semi Dark DecafAll the ritual · pH 5.75 · 4.75mg caffeine
Reason 05

Your Stomach Gets 30 Days To Decide

Free shipping on every order and a 30 day money back guarantee that covers opened bags. Brew it every morning for a month. If the burn has not gone quiet, email us, keep the coffee, and we refund you in full.

  • Free shipping with no minimum and no fine print
  • Opened bags included, and nothing to ship back
  • One time purchase, no subscription trap
30Day Promise

Drink It. Judge It. Decide.

Refunds cover opened bags because a sealed bag cannot tell you anything. One email inside 30 days is the entire process.

From Our Customers

Fusion In The Wild

Tieman's Fusion Dark Roast bag on a stone wall with pine forest behindTieman's Fusion Dark Roast bag on a river boulderTieman's Fusion Medium Roast bag on a deck railing overlooking pinesTieman's Fusion Dark Roast bag in the sand by a lifeguard tower
Real Cups, Real People

The People Who Almost Quit Coffee

4.9 out of 5 from verified buyers. Most of them arrived here for one reason: their stomach.

★★★★★

“I have enjoyed my coffee purchase. Other coffees are too much for my stomach. This infused is very kind and allows me to have my coffee ritual in the morning.”

AN
Anonymous Verified buyer · Medium
★★★★★

“Delicious and healthy. Tieman's Coffee has been my go to now for years. I enjoy it and drink it so much, I wish they would bring back the bulk size!”

MS
Marc S. Verified buyer · 6 bags
★★★★★

“I have found that the best value for me is to buy direct in bulk. I get so excited to see my order box on my doorstep.”

VV
Vicki V. Verified buyer · Dark
The Offer

Save Up To 20% On Low Acid Fusion

Everything below is what is included. Pick your roast and bundle at checkout. Free shipping and a 30 day money back guarantee either way.

Available Roasts · All Ground · 10oz Bags
Dark Fusion 10oz
DarkpH 5.97 · 71.11mg caffeine
Medium Fusion 10oz
MediumpH 5.84 · 68.66mg caffeine
Decaf Fusion 10oz
DecafpH 5.75 · 4.75mg caffeine
Bundle Pricing

Pricing shown for Dark and Medium at $11.99 per bag. Decaf is $12.99 per bag.

Insured shipping availableAdd at checkout for $5.83, covers loss, theft or damage
30 day money backOpened bags included, full refund
Free shipping, alwaysNo minimum, no surprise fees

Ready when you are. Your selected bundle will be ready for you at checkout.

Shop Low Acid Fusion
Launch batch selling fast83% claimed
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Zero Risk

Three Promises We Put In Writing

Free Shipping, Always

Every order ships free within the US. No minimums and no surprise fees at checkout.

30 Day Money Back

Opened bags included. If it is not gentler than your usual cup you get every cent back.

Numbers On The Bag

Acidity, caffeine and antioxidant levels are tested and printed on every bag. Compare freely.

Questions

Everything Else You Are Wondering

Most reflux and stomach discomfort from coffee is driven by acidity. Fusion tests between pH 5.75 and 5.97 depending on roast, versus roughly pH 4.8 for standard coffee, and the vast majority of customers who switched for this exact reason tell us the burn settles within a few days. If it does not work for you, the 30 day guarantee covers you, opened bags included.

The Fusion Process blends 100% Arabica with ceremonial grade matcha, rooibos and goji berry, fused into the grind rather than added on top. The result is measured in a lab and printed on the bag: pH 5.75 to 5.97 depending on roast.

No. It is roasted by a Los Angeles house with over 100 years of sourcing and roasting behind it. The cup is rich and full bodied with no grassy or herbal aftertaste, which is the part most low acid coffees get wrong.

Dark Fusion has 71.11mg per 8oz, Medium has 68.66mg, and the Semi Dark Decaf has 4.75mg. That is normal coffee territory. The difference is the theanine from ceremonial matcha, which smooths the delivery so you do not spike and crash.

Enamel begins to soften below roughly pH 5.5. Standard coffee sits under that line. Every Fusion roast tests above it, which is why we print the acidity on the bag rather than describing the coffee as smooth and leaving it there.

This offer is ground only, in 10oz bags, so it works straight out of the bag in drip machines, pour over, French press and most espresso setups. No grinder needed.

Two reasons. Price: 3 bags saves 10% and 6 bags saves 20%, the lowest per bag price we offer. And results: the people who report the biggest change in digestion are the ones who ran it as their only coffee for several weeks straight.

Email us within 30 days and we refund you in full, including opened bags. You do not need to ship anything back. That is the whole policy.

Last Call

Keep The Coffee. Lose The Acid.

Free shipping. 30 day money back guarantee. Up to 20% off while the launch batch lasts.

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