It's not a common trigger, but drinking a concentrated protein-and-liquid mixture on an empty stomach can cause mild reflux or heartburn in people who are already prone to it.
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See the Full BreakdownWhy It Can Happen
Protein and fluid volume on an empty stomach can be more noticeable for people already prone to reflux, and acidic add-ins like apple cider vinegar or lemon can make it worse. See our empty-stomach guide for more on how the timing affects tolerance.
How to Reduce the Risk
At a Glance
- Skip acidic add-ins like ACV or lemon if you're reflux-prone
- Start with a smaller amount and build up
- Avoid lying down right after drinking it
- Stop and check with a doctor if symptoms are frequent or severe
Quick Take
Not a common issue for most people, but worth adjusting the recipe if you already deal with reflux.
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