Dr.GutHealth said:The mechanism is slowed transit plus reduced intake, and that combination determines which interventions work.
Heartburn management on constipation: Gaviscon before bed has been my savior. The delayed gastric emptying means stomach acid just sits there.
Don't ignore persistent heartburn — chronic acid exposure can damage your esophagus. If OTC remedies aren't cutting it after 2 weeks, see your doctor for something stronger. You shouldn't suffer through this.
Following on from pat_auckland — and this may be the naive question:
What the mechanism is, because if it is transit rather than water then fiber is the wrong lever?
dave_SLC said:Heartburn management on constipation: Gaviscon before bed has been my savior.
Gastric emptying studies and constipation: semaglutide delays gastric emptying by ~40% at steady state, as measured by acetaminophen absorption testing and scintigraphy[1].
Clinically relevant implications:
- Explains early satiety and nausea
- Affects absorption of co-administered oral medications
- Creates aspiration risk for procedures under anesthesia
- Contributes to constipation via slowed GI transit
Importantly, the gastric emptying delay attenuates with continued use (tachyphylaxis), which correlates with the transient nature of GI side effects.
[1] Blundell J, et al. Diabetes Obes Metab. 2017;19(9):1242-1251.
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Update — the osmotic agent was the thing. I had been reaching for a stimulant, which was making the next day worse.
andrew_nyc said:Gastric emptying studies and constipation: semaglutide delays gastric emptying by ~40% at steady state, as measured by acetaminophen absorption…
Gastroparesis symptoms with constipation: the delayed gastric emptying from GLP-1 agonists can cause early satiety, bloating, and feeling "full" for hours after a small meal.
Tips: eat your protein FIRST (most important macro), then vegetables, then carbs last. Chew thoroughly — 20-30 chews per bite isn't excessive. Avoid carbonated beverages with meals. If symptoms are severe, your doctor may recommend a gastric emptying study.