Trelagliptin Dosing and Administration

Trelagliptin is administered as a single 100 mg oral dose once weekly in patients with normal renal function, making it the only DPP-4 inhibitor that requires dosing just once per week rather than daily. 1

Standard Dosing for Normal Renal Function

The recommended dose is 100 mg orally once weekly for patients with type 2 diabetes and adequate kidney function (creatinine clearance ≥30 mL/min). 1, 2
Trelagliptin can be taken at any time of day, with or without food, providing flexibility in administration. 2
The once-weekly dosing schedule is designed to improve medication adherence compared to daily DPP-4 inhibitors while maintaining similar glycemic efficacy. 1, 3

Dose Adjustments for Renal Impairment

Severe Renal Impairment or End-Stage Renal Disease

For patients with severe renal impairment (creatinine clearance <30 mL/min) or end-stage renal disease requiring hemodialysis, reduce the dose to 25 mg once weekly. 4
This 25 mg weekly dose provides effective glycemic control (mean HbA1c reduction of -0.71% at 12 weeks) with no major safety concerns in patients with advanced kidney disease. 4
No additional dose adjustment is needed for patients on hemodialysis—the 25 mg weekly dose is appropriate regardless of dialysis timing. 4

Moderate Renal Impairment

For patients with moderate renal impairment (creatinine clearance 30–50 mL/min), initiate conservatively at 50 mg once weekly and monitor closely for hypoglycemia, particularly if combined with sulfonylureas or insulin. 5
If glycemic control is inadequate after 4–8 weeks at 50 mg weekly and the patient tolerates the medication well, consider increasing to 100 mg weekly. 5

Timing and Administration

Trelagliptin should be taken on the same day each week to maintain consistent drug levels and simplify adherence. 2
If a dose is missed, take it as soon as remembered unless it is within 3 days of the next scheduled dose—in that case, skip the missed dose and resume the regular weekly schedule. 2
Do not take two doses within 3 days of each other to avoid excessive DPP-4 inhibition and potential adverse effects. 2

Monotherapy vs. Combination Therapy

Trelagliptin 100 mg weekly can be used as monotherapy in patients inadequately controlled by diet and exercise alone, achieving mean HbA1c reductions of -0.74% over 52 weeks. 2
It is also effective in combination with other oral antidiabetic agents, including:
- Sulfonylureas (e.g., glipizide, glimepiride) 2
- Biguanides (metformin) 2
- Thiazolidinediones (pioglitazone) 2
- α-glucosidase inhibitors (acarbose, miglitol) 2
- Glinides (repaglinide, nateglinide) 2
When combining trelagliptin with sulfonylureas or insulin, reduce the dose of the sulfonylurea or insulin by 20–30% to minimize hypoglycemia risk. 5, 2

Dose Titration and Monitoring

No dose titration is required for trelagliptin—patients remain on the same weekly dose (100 mg or 25 mg depending on renal function) throughout treatment. 1, 4
Assess glycemic control (HbA1c and fasting plasma glucose) at 12–16 weeks after initiation to determine treatment efficacy. 1, 2
If HbA1c remains above target after 3–6 months at the appropriate dose, add or intensify other glucose-lowering agents (e.g., metformin, SGLT2 inhibitors, GLP-1 receptor agonists) rather than increasing trelagliptin dose. 6, 2

Special Populations

Elderly Patients

No dose adjustment is needed based on age alone, but elderly patients with declining renal function should have creatinine clearance assessed and dose adjusted accordingly. 4, 3
Monitor elderly patients more closely for hypoglycemia, especially if combined with sulfonylureas or insulin. 3

Hepatic Impairment

No dose adjustment is required for patients with hepatic impairment, as trelagliptin is primarily eliminated renally. 3

Safety and Tolerability

Trelagliptin is well tolerated with a safety profile similar to daily DPP-4 inhibitors, with most adverse events being mild to moderate. 1, 3
The most common adverse events include gastrointestinal complaints (abdominal pain, nausea, diarrhea) occurring in up to 16% of patients. 5, 2
Hypoglycemia risk is minimal when used as monotherapy but increases when combined with sulfonylureas or insulin. 1, 3
Body weight remains stable with trelagliptin—no significant weight gain or loss is observed. 5, 1

Common Pitfalls to Avoid

Do not use trelagliptin in patients with type 1 diabetes or diabetic ketoacidosis—it is only indicated for type 2 diabetes. 5
Do not combine trelagliptin with other DPP-4 inhibitors (e.g., sitagliptin, linagliptin)—there is no additional benefit and it increases adverse event risk. 6
Do not assume the 100 mg weekly dose is appropriate for all patients—always assess renal function and adjust to 25 mg weekly if creatinine clearance is <30 mL/min. 4
Do not delay dose reduction of sulfonylureas or insulin when adding trelagliptin—failure to reduce these agents increases hypoglycemia risk. 5, 2

Comparison to Daily DPP-4 Inhibitors

Trelagliptin 100 mg once weekly is non-inferior to alogliptin 25 mg daily in terms of HbA1c reduction (mean difference 0.11%, 95% CI -0.054 to 0.281). 1
The once-weekly dosing of trelagliptin offers improved convenience and potentially better adherence compared to daily DPP-4 inhibitors, without compromising efficacy or safety. 1, 3
For patients with severe renal impairment, trelagliptin 25 mg weekly is more convenient than daily sitagliptin 25 mg (which also requires dose reduction in renal impairment). 5, 4

What is the recommended dose and weekly dosing schedule of trelagliptin for adults with type 2 diabetes mellitus, and are dose adjustments needed for renal impairment, hepatic impairment, or in elderly patients?

Have a follow-up question?