
If heartburn showed up after starting a GLP-1,you’re not imagining things.
FDA semaglutide labeling lists dyspepsia and gastroesophageal reflux disease among common adverse reactions, along with nausea, vomiting, abdominal pain, bloating, and belching. (FDA Access Data)
Some people experience mild symptoms, while others may notice more discomfort, especially during dose increases.
One reason this can happen is that GLP-1 medications like semaglutide can delay gastric emptying. When food sits in the stomach longer, some people notice more upper-GI symptoms.
Because food is staying in the stomach longer, larger or heavier meals can sometimes make symptoms feel worse.
A few practical tips can help:
Even when reflux is flaring, protein still matters. A helpful general guideline is 25–35 grams per meal for many women and 35–45 grams per meal for many men, adjusted to tolerance and medical guidance. These are a starting point, not a rigid rule.
Easier options on lower-appetite or higher-symptom days may include:
If symptoms are severe, persistent, or affecting hydration and daily intake, it’s time to bring in your healthcare provider.