What is dulaglutide?
Dulaglutide is a GLP-1 receptor agonist made by Eli Lilly. Its structure is larger than most compounds on this site: two copies of a modified GLP-1 peptide chain are joined through a linker to an Fc fragment, the stem portion of a human antibody (IgG4). That makes dulaglutide a peptide–Fc fusion protein rather than a short peptide. The Fc portion is a large part of why dulaglutide is long-acting compared with natural GLP-1.
Dulaglutide is an injectable product that arrives already in liquid form. It is supplied in prefilled single-dose pens, with the solution measured and sealed by the manufacturer. That is the key fact for this site, and it is why the questions people bring here, such as dulaglutide bac water or dulaglutide dosing, have short answers. This page makes no claims about effects in people.
Dulaglutide drug class and brand name
By drug class, dulaglutide is a GLP-1 receptor agonist, the same class that includes liraglutide and semaglutide. Within that class it is a once-weekly product. Its brand name is Trulicity, made by Eli Lilly, and it is FDA-approved; it was first approved in 2014.
When people search “dulaglutide brand name,” the answer is Trulicity. Dulaglutide is the generic (nonproprietary) name of the active ingredient, and Trulicity is the name of the finished pen product. Labels and product listings may use either name for the same thing. Because the molecule is a large fusion protein made by the manufacturer, any powder sold under the same name would not be the approved pen, and its label would be the only information about what it contains.
Dulaglutide mechanism of action, in plain terms
GLP-1 (glucagon-like peptide-1) is a hormone the body makes naturally. Dulaglutide binds to and activates the same receptor that GLP-1 acts on, which is what “GLP-1 receptor agonist” means. Natural GLP-1 is broken down within minutes. Dulaglutide’s modified peptide chains resist that breakdown, and the attached Fc fragment makes the molecule too large to be cleared quickly, which together explain its long action.
That is the neutral, structural description. This page does not describe what the drug is prescribed for or how well it works; those questions belong with the product labeling and a qualified professional.
Can you mix dulaglutide with BAC water?
No. Bacteriostatic water is used to reconstitute lyophilized (freeze-dried) injectable powders that arrive in sealed vials. Dulaglutide is not sold that way. It arrives already in liquid form in a prefilled pen, so there is nothing to dissolve and nothing to mix.
With no powder, no vial mg and no water volume, there is no concentration to calculate and no U-100 syringe-unit math, which is why the calculator on this page is greyed out. The amount in each pen is set by the manufacturer and printed on the label. For what bacteriostatic water is actually designed for, see our guide to BAC water.
Dulaglutide dosing: what this page can and can’t tell you
Every page on this site works the same way: we do arithmetic on an amount you already have in a reconstituted vial, and we never set, suggest or check one. For dulaglutide dosing there is no arithmetic to do. Each prefilled pen already contains a fixed, labeled amount, and pens come in different strengths.
This page will not give a dulaglutide dose, a starting amount, a titration or a schedule, and nothing here should be read that way. Those come from the product labeling and a qualified professional. Pen strengths are written as mg of dulaglutide in the volume of solution in the pen, and 1 mg = 1,000 mcg if you are comparing units.
Dulaglutide vs peptide vials on this site
People comparing GLP-1 compounds often find dulaglutide next to research-labeled vials of semaglutide, tirzepatide and retatrutide. Those vials are freeze-dried powder, so they do use BAC water, and each has its own page with a mixing chart and a preselected calculator. Dulaglutide is different on two counts: it is a large fusion protein rather than a short peptide, and it is sold only as a ready-made liquid.
Keep the numbers separate. A vial page reports micrograms per syringe unit after mixing; a dulaglutide pen reports a fixed mg amount per pen. The two cannot be entered into the same calculator, and we do not compare compounds for effectiveness or safety. For vial compounds, browse the peptide library.
Dulaglutide FAQ
What is the brand name for dulaglutide?
Dulaglutide is sold as Trulicity, made by Eli Lilly. Dulaglutide is the name of the active ingredient; Trulicity is the name of the prefilled pen product.
What drug class is dulaglutide?
Dulaglutide is a GLP-1 receptor agonist, the same class as liraglutide and semaglutide. It is a once-weekly product.
Can you mix dulaglutide with BAC water?
No. Dulaglutide arrives already in liquid form in prefilled pens. There is no powder to reconstitute, so BAC water and syringe-unit math do not apply.
Is dulaglutide a peptide?
It is built from peptide chains, but it is larger than a typical peptide: two modified GLP-1 chains joined to an antibody Fc fragment, making it a fusion protein.
Does this page give a dulaglutide dose?
No. This site does not set or suggest amounts, titrations or schedules. The amount in each pen is on the label, and dosing questions belong with a qualified professional.