Indications for: QTERN

Adjunct to diet and exercise to improve glycemic control in adults with type 2 diabetes mellitus.

Limitations of Use:

Not for treating type 1 diabetes or diabetic ketoacidosis.

Adult Dosage:

Swallow whole. Take in the AM. Not currently treated with dapagliflozin: initially 5mg/5mg once daily; if tolerated and need additional glycemic control, may increase to 10mg/5mg once daily.

Children Dosage:

<18yrs: not established.

QTERN Contraindications:

Moderate to severe renal impairment (eGFR <45mL/min/1.73m2), ESRD, or on dialysis.

QTERN Warnings/Precautions:

Correct volume depletion and assess for volume contraction before initiating. Monitor for symptomatic hypotension after starting therapy (esp. elderly, renal impairment, or on loop diuretics). Assess for ketoacidosis in presence of signs/symptoms of metabolic acidosis, regardless of blood glucose levels; discontinue if suspected, evaluate and treat; consider risk factors before initiation (eg, pancreatic insulin deficiency, caloric restriction, alcohol abuse). Consider temporarily discontinuing prior to schedule surgery (for ≥3 days) or other clinical situations (eg, prolonged fasting due to illness or post-surgery). Evaluate renal function prior to starting and monitor periodically thereafter. Risk of acute kidney injury in hypovolemia, chronic renal insufficiency, CHF, and concomitant drugs (eg, diuretics, ACEIs, ARBs, NSAIDs). Consider temporarily discontinuing in reduced oral intake or fluid losses; monitor for acute kidney injury; discontinue and treat if occurs. Consider risks/benefits in patients with higher risk factors of heart failure; monitor for signs/symptoms; evaluate and consider discontinuing if develops. Monitor for signs/symptoms of pancreatitis, serious hypersensitivity reactions, severe joint pain, or bullous pemphigoid; discontinue if suspected or occurs. Necrotizing fasciitis of the perineum (Fournier's gangrene); discontinue and treat immediately if suspected; use alternative antidiabetic. Monitor for genital mycotic infections, UTIs; treat as appropriate. History of angioedema to other DPP-4 inhibitors. Severe hepatic impairment. Elderly. Pregnancy (avoid during 2nd & 3rd trimesters). Nursing mothers: not recommended.

QTERN Classification:

Sodium-glucose co-transporter 2 (SGLT2) inhibitor + dipeptidyl peptidase-4 (DPP-4) inhibitor.

QTERN Interactions:

Concomitant strong CYP3A4/5 inhibitors (eg, ketoconazole, atazanavir, clarithromycin, indinavir, itraconazole, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin): not recommended. May need a lower dose of concomitant insulin or insulin secretagogue (eg, sulfonylurea) to reduce risk of hypoglycemia. Greater potential for volume depletion with concomitant diuretics. May cause false (+) urine glucose tests or unreliable measurements of 1,5-AG assay; use alternative methods to monitor glycemic control.

Adverse Reactions:

Upper RTI, UTI, dyslipidemia, headache, diarrhea, back pain, arthralgia; genital mycotic infections (esp. females), hypersensitivity reactions, pancreatitis, heart failure, hypotension, ketoacidosis, renal impairment, urosepsis, pyelonephritis, bladder cancer, possible severe and disabling arthralgia, bullous pemphigoid; rare: Fournier's gangrene.


Dapagliflozin: UGT1A9. Saxagliptin: CYP3A4/5.

Drug Elimination:

Dapagliflozin: Renal. Saxagliptin: Renal/Hepatic.

Generic Drug Availability:


How Supplied:

Tabs—30, 90, 500

Pricing for QTERN

10mg/5mg tablet (Qty: 30)
Appx. price $553