Overview
About Cola
Cola stacks up three things that bother sensitive people at once: caffeine (about 34 mg in a 12 oz can), phosphoric acid that gives it a tooth-eroding pH near 2.5, and a large dose of sugar or high-fructose corn syrup.
That combination is why cola is a classic driver of reflux and of the caffeine-withdrawal "cola headache," and the sugar load makes it pro-inflammatory and poor for SIBO. It is clean on histamine, gluten and lactose, so the issue is the caffeine-plus-acid-plus-sugar package, not a food-chemistry trigger.
Sensitivities
How Cola scores
Watch for
What trips people up
- Moderate caffeine, enough to feed a dependence and to cause a rebound headache when you skip your usual can, which is the real "cola headache"
- Phosphoric acid gives cola a very low pH (around 2.5), a common reflux and heartburn trigger and hard on tooth enamel, made worse by the carbonation
- High in sugar or high-fructose corn syrup, so it rates pro-inflammatory, poor for SIBO, and carries moderate excess-fructose and polyol loads from the sweeteners
- Diet colas drop the sugar but keep the caffeine and phosphoric acid, so they still hit the reflux and headache angles
Diet fit
Where it fits
Swap ideas
More alternatives
FAQ
Common questions about Cola
Why does cola give me a headache?
Usually caffeine. A cola habit builds a mild caffeine dependence, and skipping your usual can triggers a withdrawal headache, the classic "cola headache." For some people the headache is instead tied to the sugar swing or, if they are prone to migraine, to caffeine as a trigger. Cutting back gradually rather than all at once avoids the rebound.
Does cola cause acid reflux?
It is one of the more reliable soda triggers. Cola combines caffeine, which relaxes the valve at the top of the stomach, with carbonation that increases pressure, and phosphoric acid that pushes the pH down near 2.5. Together those make reflux and heartburn more likely, especially on an empty stomach or late at night.
Is diet cola any better for triggers?
It removes the sugar, which helps with the inflammation and blood-sugar side, but it keeps the caffeine and phosphoric acid. So if your problem is reflux, tooth erosion or caffeine headaches, diet cola is not much of an improvement.
References
Read the background
Ratings reflect the Triggerbites ingredient database and may vary with portion size and preparation.