Eloralintide side effects
Also known as: LY3841136 · LY-3841136 · Elora
Updated 23 sources
9 side effects reported for Eloralintide: 9 from studies and labels, 0 from users and guides. 2 come with the ways people manage them.
Side effects reported in studies and labels
From trials and regulators9
Clinical studies and regulatory documents.
Nausea
11% (1 mg), 13% (3 mg), 64% (6 mg), 33% (9 mg), 54% (6 to 9 mg), 25% (3 to 9 mg) vs 14% on placebo over 48 weeks
How people manage it
- In the trial, the slow 3 to 6 to 9 mg climb had far less nausea than starting at 6 mg.
Fatigue
0% (1 mg), 13% (3 mg), 29% (6 mg), 43% (9 mg), 46% (6 to 9 mg), 21% (3 to 9 mg) vs 12% on placebo
Vomiting
7 of 28 people at 6 mg and 6 of 54 at 9 mg vs none of 53 on placebo; 1 of 52 in the slow 3 to 9 mg arm
Constipation
13 of 54 people at 9 mg vs 3 of 53 on placebo; 2 to 4 people in the other arms
Hair loss
6 of 54 people at 9 mg and 5 of 52 in the 3 to 9 mg arm vs none on placebo
Slower heart rate
Bradycardia in 3 people each in the 6 mg, 9 mg and 3 to 9 mg arms vs none on placebo; pulse fell during treatment in phase 1
Mood changes
4 of 100 phase 1 participants had mood-related events; the 3 on 12 mg stopped treatment and recovered in 2 to 4 days
How people manage it
- In phase 1, stopping the drug resolved the events within days.
Injection-site reactions
33.3% (3 mg), 21.7% (6 mg) and 13.9% (12 mg) of phase 1 cohorts vs 3.7% on placebo; mostly mild pain
Stopping because of side effects
0% to 10.8% on eloralintide alone vs 16.7% on placebo in the type 2 diabetes phase 2; 10.8% to 27.0% on EloraTZP
How much is known
Some human trials
Two phase 1 studies, a 263-person 48-week phase 2 in obesity, and a 367-person phase 2 in type 2 diabetes (press release so far). ClinicalTrials.gov lists five ENLIGHTEN phase 3 trials (ENLIGHTEN-1, 2, 3, 4 and 6), all still running with no results yet. No data exist on research vials.
Eloralintide side effects questions
What are the side effects of eloralintide?
Nausea and fatigue lead, and both rise with dose: at 9 mg, 33% nausea and 43% fatigue vs 14% and 12% on placebo. The trial registry also lists vomiting, constipation, hair loss and slower heart rate in some people at higher doses.
Does starting low help with eloralintide nausea?
In phase 2, people who started at 6 mg had 64% nausea. People who climbed 3 to 6 to 9 mg had 25%, while still losing 16% of their weight.
Sources for these side effects
4 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.
Clinical study4
- Billings et al. Eloralintide 48-week phase 2 trial (Lancet 2025)PubMed · checked Oct 24, 2026
- NCT06230523 phase 2 registry record with posted resultsClinicalTrials.gov · checked Oct 24, 2026
- Eloralintide phase 1 proof of concept, 12 weeks (Diabetes Obes Metab 2026)PubMed Central · checked Oct 24, 2026
- Lilly's EloraTZP delivered greater weight loss and A1C reduction vs tirzepatide 15 mg (30 Sep 2026)PR Newswire, via a news report · checked Oct 24, 2026
Back to the full Eloralintide page for dosing, the vial chart and storage.