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Dulaglutide
Dulaglutide is a long-acting, once-weekly GLP-1 receptor agonist used for Type 2 Diabetes and cardiovascular risk reduction.
Brand: * Trulicity
Mechanism of Action
Dulaglutide activates the GLP-1 receptor.
Effects:
* Increases glucose-dependent insulin secretion * Decreases glucagon secretion * Slows gastric emptying * Increases satiety * Promotes weight loss
Net clinical effects:
* Decreases HbA1c * Reduces body weight * Reduces major adverse cardiovascular events
Low hypoglycemia risk unless combined with insulin or sulfonylureas.
Indications
Type 2 Diabetes Mellitus
* Glycemic control * Cardiovascular risk reduction in high-risk patients
Atherosclerotic Cardiovascular Disease (ASCVD) ★
Dulaglutide reduces:
* Myocardial infarction * Stroke * Cardiovascular death
Particularly beneficial in patients with established ASCVD or multiple risk factors.
Major Trial
REWIND Trial:
* Reduced major adverse cardiovascular events * Included many patients without established ASCVD * Demonstrated strong primary prevention benefit
Dosing
* Once-weekly subcutaneous injection * No oral formulation * Gradual dose escalation improves tolerability
Adverse Effects
Common:
* Nausea * Vomiting * Diarrhea * Early satiety
Serious (rare):
* Pancreatitis * Gallbladder disease * Theoretical risk of medullary thyroid carcinoma
Contraindications
* Personal or family history of medullary thyroid carcinoma * MEN2 syndrome * Severe gastrointestinal disease
Use caution in:
* History of pancreatitis
Dulaglutide vs Other GLP-1 Agents
* Shorter-acting formulations available
* Daily injection * Strong ASCVD data (LEADER trial)
* Greater weight loss * Oral option available
Dulaglutide:
* Weekly dosing * Strong primary prevention data * Well tolerated
GLP-1 vs SGLT2
Dulaglutide:
* Strong ASCVD reduction * Modest weight loss * Minimal heart failure benefit
* Strong heart failure benefit * Strong renal protection
Clinical Pearls
* Weekly injection * Proven ASCVD benefit * Good primary prevention data * Low hypoglycemia risk * Not primary heart failure therapy
