Dulaglutide Explained: Blood Sugar Control and Side Effects

Dulaglutide injection pens in different colours showing weekly treatment options for type 2 diabetes

What Is Dulaglutide?

Dulaglutide is a once-weekly injectable medicine prescribed for adults with type 2 diabetes to help control blood sugar. In some cases, it can also support gradual weight loss.

It belongs to a group of medicines known as GLP-1 receptor agonists, which mimic natural hormones that regulate appetite and glucose balance. In Singapore, it is marketed under the brand name Trulicity®.

Dulaglutide Mechanism of Action: How Does Work?

Dulaglutide helps maintain stable blood sugar levels and influences appetite through several effects:

  1. Stimulates the pancreas to release insulin, but only when glucose levels are high.
  2. Reduces glucagon release, a hormone that signals the liver to release stored sugar into the bloodstream.
  3. Slows how quickly food moves from the stomach into the intestines (gastric emptying), extending feelings of fullness.
  4. Stimulates GLP-1 receptors in the brain that control hunger, helping reduce calorie intake.

Together, these actions improve diabetes control by keeping blood sugar within a healthier range, with the added benefit of potentially supporting modest weight loss when paired with diet and lifestyle adjustments.

Dulaglutide & Other GLP-1 Medications

Although dulaglutide is part of the GLP-1 receptor agonist class, each medicine within this group differs in dosage schedule, delivery method, and approved medical uses.

Medication Receptor Targets Dosing Frequency and Route Used For
Dulaglutide
(Trulicity)
GLP-1 only Weekly injection (under the skin) Type 2 diabetes
Liraglutide
(Victoza® / Saxenda®)
GLP-1 only Daily injection (under the skin)
  • Type 2 diabetes (Victoza)
  • Weight management (Saxenda)
Semaglutide
(Ozempic® / Wegovy® / Rybelsus®)
GLP-1 only Weekly injection (under the skin)
  • Type 2 diabetes (Ozempic)
  • Weight management (Wegovy)
Tirzepatide
(Mounjaro®)
GLP-1 & GIP Weekly injection (under the skin)
  • Type 2 diabetes
  • Weight management
Woman checking blood sugar with glucose monitor before dulaglutide treatment for diabetes control

Who Might Benefit from Dulaglutide?

Dulaglutide may be an option for people with type 2 diabetes who:

  1. Have not achieved sufficient blood sugar control with oral medication alone.
  2. Prefer a once-weekly injection instead of daily tablets or frequent injections.
  3. Face higher cardiovascular risk or have existing heart disease, as research suggests dulaglutide can reduce the likelihood of heart attack or stroke.

What Are Potential Side Effects of Dulaglutide?

As with many other medications, side effects can occur with dulaglutide, particularly when starting treatment. Commonly reported issues include:

Most of these symptoms are temporary and tend to lessen as the body adjusts. However, seek urgent medical advice if you experience:

Disclaimer: This list does not cover all possible side effects, so always speak with a doctor if you are unsure.

Who Is Unsuitable for Dulaglutide Treatment?

Gloved hand holding card with type 1 diabetes text indicating dulaglutide not suitable for condition

Dulaglutide is usually not recommended for:

  • People with type 1 diabetes or diabetic ketoacidosis, as it relies on the body still producing insulin.
  • Anyone with a personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia syndrome type 2, due to potential thyroid-related risks.
  • Individuals with severe digestive conditions such as gastroparesis, since dulaglutide slows stomach emptying and may worsen these symptoms.

Can I Get Dulaglutide in Singapore?

Dulaglutide can only be obtained in Singapore with a doctor’s prescription and is not available over the counter.

A consultation with a doctor or endocrinologist is required to confirm whether it is suitable, and follow-up appointments are recommended to monitor progress and adjust the treatment plan if necessary.

Where Can I Test for Diabetes Near Me?

ATA Medical Orchard Clinic

Orchard Clinic

Central location in Orchard, easily accessible by public transport.

1 Orchard Blvd, #05-09 Camden Medical Centre, Singapore 248649

Nearest MRT: Orchard Boulevard Station (TE13)

ATA Medical Tanjong Pagar

Tanjong Pagar Clinic

Serving professionals in the CBD with fast, confidential women’s health services.

72 Anson Rd, #01-02 Anson House, Singapore 079911

Nearest MRT: Tanjong Pagar Station (EW15)

Consult Our Friendly Doctors on Diabetes Management Today

Woman consulting female doctor for dulaglutide for type 2 diabetes management in Singapore
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