What is Dulaglutide?
Dulaglutide is a weekly GLP-1 receptor agonist sold only as Trulicity. Eli Lilly brought it to market in 2014, and for years it was the highest-volume GLP-1 in the United States.
Unlike semaglutide and tirzepatide, dulaglutide never got a weight-management approval. It stays in the diabetes lane, where it competes on A1C reduction, ease of use, and the cardiovascular result from REWIND.
Because it is a fusion protein rather than a small peptide, it is regulated as a biologic — meaning any cheaper version would have to be an approved biosimilar, and none exists.
How it works
Dulaglutide links two GLP-1 analogue peptides to a modified human antibody Fc fragment. The Fc portion makes the molecule far too large for the kidneys to filter quickly, stretching the half-life to roughly five days.
The receptor effects are standard for the class: insulin release rises when blood sugar is high, glucagon falls, the stomach empties more slowly, and appetite drops modestly. The appetite signal is weaker than semaglutide’s, which is why the weight results are smaller.
Dosing schedule
Dulaglutide comes in four fixed-dose single-use pens; there is no dial to adjust:
| Dose | When |
|---|---|
| 0.75 mg / week | Starting dose |
| 1.5 mg / week | Standard maintenance dose |
| 3 mg / week | Step up after 4+ weeks if needed |
| 4.5 mg / week | Maximum dose |
Results in clinical trials
The AWARD trials showed A1C reductions of roughly 1.1 to 1.9 points across doses. REWIND, the cardiovascular outcomes trial, found a 12% reduction in major adverse cardiovascular events over a median 5.4 years in a population that was mostly primary prevention. Weight loss averages 7 to 10 lbs at the highest dose.
Side effects
Common
- Nausea
- Diarrhea
- Vomiting
- Abdominal pain
- Decreased appetite
- Indigestion
- Fatigue
Serious (rare)
- Pancreatitis
- Gallbladder disease
- Kidney injury from dehydration
- Severe hypoglycemia with insulin or sulfonylureas
- Hypersensitivity reactions
How much does Dulaglutide cost?
With no biosimilar on the market, dulaglutide means paying for Trulicity:
| Route | Typical cost |
|---|---|
| Trulicity (list price) | ~$990 / month |
| With insurance (diabetes diagnosis) | $25–$100 / month copay |
| Lilly savings card | As low as $25 / month (eligible commercial plans) |
| Medicare Part D | Covered for diabetes; annual out-of-pocket capped under the IRA |
| Generic / biosimilar | None approved |
Prices vary by clinic, dose, and location — always confirm directly. See real local pricing on our clinic listings.
Frequently asked questions
Why is there no generic dulaglutide?
Dulaglutide is a biologic — an engineered fusion protein, not a small molecule — so a competitor would have to file as a biosimilar, a longer and more expensive path. Combined with patent protection running toward the end of the decade, that puts realistic biosimilar entry in the 2030s.
Is dulaglutide good for weight loss?
Not particularly. It produces about 7 to 10 lbs at the top dose and has no weight-management approval. Semaglutide and tirzepatide are several times more effective and are what providers prescribe when weight is the target.
How does dulaglutide compare to semaglutide?
Head-to-head in SUSTAIN 7, semaglutide beat dulaglutide on both A1C and weight. Dulaglutide holds ground on pen simplicity and on REWIND’s primary-prevention cardiovascular data, which semaglutide’s diabetes trials did not replicate in the same population.
Related medications
Guides
Primary sources
- Trulicity prescribing information — Eli Lilly
- REWIND cardiovascular outcomes trial — The Lancet
This page is for educational purposes only and is not medical advice. Dulaglutide is a prescription medication — talk to a licensed healthcare provider about whether it is right for you. GLPFinders is a directory service and does not prescribe, sell, or dispense medications.