Trulicity

What is Trulicity?

Trulicity is Eli Lilly’s once-weekly dulaglutide injection for type 2 diabetes, approved in 2014. It is indicated for adults and children aged 10 and older, alongside diet and exercise.

Its second indication is the one worth reading carefully. Trulicity is approved to reduce the risk of major cardiovascular events in adults with type 2 diabetes who have established cardiovascular disease or multiple cardiovascular risk factors. That second half is broader than what most drugs in this class carry, where the indication usually requires established disease.

What Trulicity is not is a weight-loss drug. Weight change appears in its trials as a finding, but it is not an approved use at any dose, and there is no higher-dose weight-management version of dulaglutide the way there is for semaglutide and tirzepatide.

How does Trulicity work?

Dulaglutide acts on the receptor for GLP-1, a hormone your gut already releases when you eat. It was engineered for blood sugar first:

1. Prompts insulin release when blood sugar is high, and mainly when it is high, which is why it rarely causes low blood sugar on its own.
2. Reduces glucagon, the hormone that tells your liver to release stored sugar.
3. Slows stomach emptying and reduces appetite, which is where the modest weight effect and most of the nausea come from.

Dulaglutide belongs to the class covered in our GLP-1 overview. Unlike semaglutide and tirzepatide, it was never developed into a higher-dose weight-management product, which is the main reason its weight numbers sit well below theirs.

Trulicity and weight loss: what to expect

Expect a little, not a transformation, and note that weight is not what this drug is approved for.

We are not publishing a weight-loss percentage for Trulicity. Weight change appears in its trials as a secondary finding rather than an indication, and the figures previously shown on this page were flagged as approximate without a source behind them. Rather than reprint an unverified number, the honest statement is the comparison: semaglutide and tirzepatide reach roughly 15 to 21 percent body-weight loss at their weight-management doses, in their own trials, and Trulicity was never developed to compete there.

If a prescriber suggests Trulicity primarily for weight loss, it is fair to ask why not one of the products actually approved for it.

What are the side effects of Trulicity?

Mostly digestive, mostly early, and clustered around dose increases. Each rate below is from the placebo-controlled trials, shown against the placebo rate in the same trials. Diarrhea is the clearest example of why that matters: 8.9 to 12.6 percent looks meaningful until you see 6.7 percent on placebo.

Taken together, digestive side effects of any kind occurred in 32 percent of people at 0.75 mg and 41 percent at 1.5 mg, against 21 percent on placebo, and 1.3 to 3.5 percent stopped because of them, against 0.2 percent.

Two label details worth knowing. Trulicity carries a diabetic retinopathy warning, reported in its cardiovascular outcomes trial, and advises monitoring people with a history of it. Notably, Victoza’s label carries no retinopathy warning at all, so this is not a class-wide rule. And the label says Trulicity is not recommended in patients with severe gastroparesis.

Because it slows stomach emptying, the label instructs patients to tell their care team before any procedure requiring general anesthesia or deep sedation. Trulicity never carried the suicidality warning; only three products did, and all three had it removed in February 2026.

Practical management, which rests on clinical experience rather than trials of the advice itself: smaller meals, less fatty food and alcohol around injection day, and enough fluid. Persistent severe abdominal pain is not a symptom to wait out.

Who should not take Trulicity?

Trulicity works for most adults with type 2 diabetes, but two conditions make it a hard no, and several more are worth flagging to your prescriber before you start.

The boxed warning drives the first contraindication: because dulaglutide caused thyroid C-cell tumors in rats, anyone with a personal or family history of medullary thyroid cancer, or with MEN 2, should not take it. The second is a serious hypersensitivity reaction to dulaglutide or any component.

Trulicity dosage: schedule and strengths

Trulicity comes in four weekly strengths. Adults start at 0.75 mg once weekly, may move to 1.5 mg after 4 weeks, and can then climb in 1.5 mg increments after at least 4 weeks at each dose. The adult maximum is 4.5 mg. For children aged 10 and older the maximum is 1.5 mg, which is the largest adult-to-pediatric gap of any drug on this site. Per the FDA label:

Missed a dose? Trulicity frames this differently from most of the class. The label says to take the missed dose as soon as possible if there are at least 3 days (72 hours) until your next scheduled dose. That is keyed to how far the next dose is, not to how long ago you missed one, which is how Ozempic (5 days) and the tirzepatide products (4 days) frame theirs.

How do you use the Trulicity pen?

The pen is single-use and comes ready to use. Follow the Instructions for Use for your device; the summary below is not a substitute for it.

1. Take the pen out of the fridge and inspect it as your Instructions for Use direct.
2. Inject under the skin of the abdomen, thigh, or upper arm. On Trulicity all three are permitted for self-injection, which is not true of the tirzepatide products.
3. Use a different spot each week.
4. Follow your Instructions for Use for the device’s own start and completion signals. Devices differ, so do not carry another product’s steps across.
5. If you also take insulin, they go in as separate injections, never mixed. The same body region is acceptable, but the injections should not be adjacent. Only four labels in this class carry that instruction, and Trulicity is one.
6. Dispose of the whole pen in a sharps container, not the trash.

Storage: refrigerated at 36 to 46°F. If needed, a pen can be kept at room temperature below 86°F for a total of 14 days, then discarded. That window is specific to this product, and it is shorter than most: the tirzepatide single-dose devices get 21 days and their KwikPens 30. Any day of the week works as injection day; keep it consistent.

How much does Trulicity cost?

Trulicity has one of the better coverage stories in this class, because it is a diabetes drug and insurers, including Medicare Part D, treat it as one.

We are not publishing a price for it. Our pricing evidence does not cover Trulicity, and rather than print an unverified figure we would rather say so and point you at the two things that actually decide what you pay: whether your plan covers it for type 2 diabetes, and whether you qualify for the manufacturer’s savings card.

Searching for a “Trulicity coupon” lands on the same thing: Lilly’s savings card. It requires commercial insurance and excludes anyone on Medicare, Medicaid, VA or TRICARE.

Trulicity vs Ozempic, Mounjaro, and newer alternatives

The pattern across trials is consistent: Trulicity holds its own on safety and ease of use, and loses on A1C and weight to the newer molecules.

That doesn’t automatically make switching right. If your A1C is at goal, your side effects are minimal, and your coverage is solid, staying on a drug with a decade of track record and proven heart protection is a perfectly good decision. But if your A1C is stuck or weight matters to you, the data says the switching conversation is worth having, see Trulicity vs Ozempic and Trulicity vs Mounjaro for the numbers.

How to get Trulicity

Trulicity is prescription-only, and the route is more traditional than for the weight-label GLP-1s: there’s no compounded dulaglutide, and telehealth weight-loss programs generally don’t carry it because it isn’t a weight-loss drug. In practice, that means the prescriber who manages your diabetes, plus a pharmacy and the savings card:

Trulicity myths and misconceptions

Trulicity attracts its share of mix-ups, especially against its newer rivals. Here’s what’s actually true behind the five claims we hear most.

• Myth Trulicity is the same as Ozempic.

  No. Trulicity is dulaglutide and Ozempic is semaglutide. Different molecules in the same class, from different makers.

• Myth Trulicity produces Ozempic-level weight loss.

  Its weight results are modest, and weight is not an approved use at any dose. The newer molecules reach roughly 15 to 21 percent in their own weight-management trials, which is a different order of effect.

• Myth There's a generic version of Trulicity.

  There is no FDA-approved generic dulaglutide, and unlike semaglutide there's no compounded market for it either.

• Myth The "Trulicity coupon" is a special discount site.

  It's Lilly's own savings card. With commercial insurance that covers the drug, it can bring the copay as low as $25 a month.

• Myth Trulicity is a form of insulin.

  It's a GLP-1 receptor agonist that prompts your own pancreas to release insulin when blood sugar is high, a different mechanism, and it doesn't replace insulin.