Wegovy Diarrhea: Why, How Long It Lasts, What Helps
Yes. In the Wegovy trials, 30% of people on 2.4 mg had diarrhea, against 16% on placebo: about 2 times the placebo rate. It is the second most common side effect in that table. Smaller, slower meals help most.
- In the Wegovy label
- Yes, with a rate
- On Wegovy 2.4 mg
- 30%
- On placebo
- 16%
- Rank in the label table
- 2 of 19
Wegovy: key facts
The half-life is about 1 week. After 7 d, half is gone. About 3% remains after five half-lives (35 d).
In STEP 1 over 68 weeks, 14.9% of body weight was lost, compared with 2.4% on placebo.
In US dollars, monthly prices include the list price and self-pay offers. Both come from the maker's price page.
Sources: FDA label (DailyMed), healthsystemtracker.org, prnewswire.com 1 2.
How often it occurs: Wegovy vs placebo
The label trials show Wegovy diarrhea by dose group. In that same trial, the placebo group provides the comparison.
| Medicine and dose | Diarrhea | Placebo | More than placebo | People in the trials |
|---|---|---|---|---|
| Wegovy 2.4 mg | 30% | 16% | +14 points | Adults with obesity or overweight (weight management) |
| Wegovy 2.4 mg | 22% | 19% | +3 points | Children 12 and older with obesity |
Source: Wegovy label (DailyMed).
Diarrhea side by side: other GLP-1s and Wegovy
Each label covers trials of its own, with different groups of people. Use it as a rough guide.
Pill forms are also included in the table: Rybelsus, Foundayo.
| Medicine | Highest rate in the label | Dose group | Placebo | People in the trials |
|---|---|---|---|---|
| Wegovy | 30% | 2.4 mg | 16% | Adults with obesity or overweight (weight management) |
 Foundayo | 25% | 17.2 mg | 11% | Adults with obesity or overweight (weight management) |
 Zepbound | 23% | 15 mg | 8% | Adults with obesity or overweight (weight management) |
 Saxenda | 20.9% | all doses | 9.9% | Adults with obesity or overweight (weight management) |
 Mounjaro | 17% | 15 mg | 9% | Adults with type 2 diabetes |
| Byetta | 13% | all doses | 6% | Adults with type 2 diabetes |
 Trulicity | 12.6% | 1.5 mg | 6.7% | Adults with type 2 diabetes |
 Victoza | 12% | 1.8 mg | 4% | Adults with type 2 diabetes |
 Rybelsus | 10% | 14 mg | 4% | Adults with type 2 diabetes |
 Ozempic | 8.8% | 1 mg | 1.9% | Adults with type 2 diabetes |
Sources: Ozempic label (DailyMed), Wegovy label (DailyMed), Rybelsus label (DailyMed), Mounjaro label (DailyMed), Zepbound label (DailyMed), Foundayo label (DailyMed), Trulicity label (DailyMed), Saxenda label (DailyMed), Victoza label (DailyMed), Byetta label (DailyMed).
Source: FDA label (DailyMed).
Why it happens on Wegovy
These medicines slow the rate at which your stomach empties. Food stays in place longer, which can cause diarrhea, especially after a large or fatty meal.
Source: health.clevelandclinic.org
What the Wegovy label says
The label's own wording on diarrhea appears here:
“common adverse reactions leading to discontinuation were nausea (1.8% versus 0.2%), vomiting (1.2% versus 0%), and diarrhea (0.7% versus 0.1%) for WEGOVY and placebo, respectively.”
Source: FDA label (DailyMed).
What helps, step by step
- Replace fluids and salts with water and an electrolyte drink.
- Choose soft, bland and low-fiber foods for a while.
- Cut back on caffeine, alcohol and drinks with milk.
- Talk with your prescriber about an anti-diarrhea medicine you can buy at a drugstore.
- Choose meals that are smaller, and stop eating when you feel full. These medicines make the stomach empty more slowly.
- Eat slowly. Your brain needs time to sense when you are full.
- If it does not ease, let your prescriber know. Your prescriber may increase the dose more slowly or recommend another GLP-1.
Before taking any drugstore product, check it with the GLP-1 interactions checker to look for interactions.
Source: health.clevelandclinic.org