Trulicity® (dulaglutide) and burping

Where burping appears in the Trulicity® documents

The US label mentions eructation in the text below its main table rather than in the table itself, because that table only shows reactions reported by at least 5% of adults. The figures come from placebo-controlled trials in which adults started directly on 0.75 mg or 1.5 mg. ^[1] The Canadian monograph prints the same pool as counts and adds a longer pool of studies up to 104 weeks, measured against every comparator rather than placebo alone. ^[4] The European summary places eructation in its “common” band and the EU leaflet lists burping among effects that may affect up to 1 in 10 people. ^[3]

Reading small numbers fairly

In the big pool, burping touched roughly 1 or 2 people in every hundred on Trulicity®, and the rate on 1.5 mg was between two and three times the rate on 0.75 mg. ^[1] AWARD-8 stands out at 5.9%. That trial was double-blind but small, its placebo group had only 60 people, and everyone was already taking glimepiride, so its figure describes that setting rather than every Trulicity® user. ^[5] Section 6.1 of the US label adds a general caution: rates from different trials, run under different conditions, should not be compared directly. ^[1]

Higher doses are a gap. The 36-week trial of 1.5 mg, 3 mg and 4.5 mg reported nausea, diarrhoea, vomiting and indigestion by dose, but burping did not reach the 5% threshold for that table, so the label is silent on whether it rises further above 1.5 mg. ^[1]

The company burping keeps in the same tables

Burping rarely turns up alone. In the same placebo pool, reflux disease (GERD) was reported by 1.7% and 2.0% on the two doses against 0.5% on placebo, swelling of the belly by 2.9% and 2.3% against 0.7%, and wind by 1.4% and 3.4% against 1.4%. ^[1] The Canadian table adds indigestion at 4.1% and 5.8% against 2.3%, and excess stomach acid at 0.7% and 1.2% against 0.2%. ^[4] The EU summary lists indigestion, reflux, bloating and wind in the same common band as burping. ^[3]

If you burp more and also feel a burning rise behind the breastbone, it is worth describing both to your prescriber, because reflux has its own triggers and treatments. The related page on Trulicity® and heartburn, linked below, covers that side in detail.

When it tends to happen

No Trulicity® document gives a week of onset for burping on its own. What they describe is the pattern for stomach and bowel effects as a group. Over up to 104 weeks these peaked in the first 2 weeks, fell quickly over the next 4 and then stayed fairly level; in short clinical pharmacology studies most appeared within two or three days of the first dose. ^[3] AWARD-8 reported the same shape for its digestive events, peaking by week 2 and falling close to placebo levels by week 6. ^[5]

The pharmacology fits that timeline. The label says dulaglutide slows stomach emptying, that the slowing is largest after the first dose and smaller with each later one, and that a gradual dose increase softens it; the adult schedule starts at 0.75 mg and moves up in steps of at least 4 weeks partly to lower the risk of stomach effects. ^[1] With a weekly pen, many people notice whether their uncomfortable days cluster soon after the injection.

Findings from reporting databases

Two analyses of the FDA Adverse Event Reporting System (FAERS) add context. One compared stomach and bowel reports across five GLP-1 medicines from 2018 to 2022: dulaglutide was reported for such events more often than expected (reporting odds ratio 1.39), less strongly than semaglutide or liraglutide, and had the lowest share of serious digestive reports, 12.29%. ^[6] A second looked at ear, nose and throat reports and found a reflux signal for every GLP-1 medicine it examined, dulaglutide included. ^[7]

Spontaneous reports cannot show that a medicine caused a symptom: anyone can file one, many events go unreported, and the number of people taking each drug is unknown. These studies point to patterns worth noticing, not to your personal risk.

Why dulaglutide can make you burp

• Supported by the label: dulaglutide delays stomach emptying (sections 12.1 and 12.2). ^[1] The EU leaflet links that delay to a feeling of fullness and, sometimes, nausea or vomiting. ^[3]
• Plausible but not measured for Trulicity®: MedlinePlus explains that air collecting in the upper stomach stretches it and makes the valve at the bottom of the gullet relax, letting the air out as a burp. ^[8] Food staying longer in the stomach could make that stretch more frequent, but no Trulicity® study has tested this.
• General background: every swallow takes in some air along with food or drink, and Cleveland Clinic names swallowed air as the most frequent reason for burping a lot. ^[9]

Causes that have nothing to do with the pen

MedlinePlus lists acid reflux, other digestive diseases and unconscious air swallowing among causes of abnormal burping. ^[8] Cleveland Clinic adds fizzy drinks, chewing gum, dentures that fit badly, a congested nose or post-nasal drip, snoring or a CPAP machine, and conditions such as functional indigestion, gastritis, stomach ulcers, lactose intolerance, H. pylori infection and bacterial overgrowth in the small bowel. ^[9]

One condition overlaps with Trulicity® itself: severely slowed stomach emptying (gastroparesis). Cleveland Clinic includes it among causes of excess burping, and the US label does not recommend Trulicity® for people with severe gastroparesis. ^[1][9] If you had stomach-emptying problems before starting, make sure your prescriber knows.

Practical steps the sources describe

NIDDK suggests ways to swallow less air: skip gum and hard sweets, avoid fizzy drinks and straws, try not to talk while eating, eat more slowly and sit down for meals, and have a dentist check that dentures fit. It also mentions smaller, more frequent meals and cutting back on foods and drinks that make your own gas worse. ^[10] For relief in the moment, MedlinePlus describes lying on your side or drawing your knees to your chest until the air passes. ^[8]

NIDDK notes that doctors sometimes suggest over-the-counter remedies, and asks you to check with your doctor before trying supplements or probiotics; a pharmacist can tell you whether a product suits your other medicines. ^[10] The Trulicity® Medication Guide asks you to tell your healthcare provider about stomach problems that are severe or do not go away, and to let every provider know you use Trulicity® before surgery or sedation, because food left in the stomach can be breathed in during anaesthesia (section 5.9). ^[1][2]

Trulicity® is a registered trademark of Eli Lilly and Company. PepLabo is not affiliated with or endorsed by Eli Lilly and Company.

When to get help