| Diabetes Mellitus, Non-Insulin-Dependent
Farxiga vs Janumet XR
Side-by-side clinical, coverage, and cost comparison for diabetes mellitus, non-insulin-dependent.Deep comparison between: Farxiga vs Janumet with Prescriber.AI
AI compares prescribing info and payer-specific access barriers across 1,200+ formularies. Here's a preview of what prescribers are already asking.Safety signalsJanumet has a higher rate of injection site reactions vs Farxiga based on FDA-approved prescribing information
Coverage gaps3 major payers require step therapy for Janumet but not Farxiga, including UnitedHealthcare
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Category
Farxiga
Janumet
At A Glance
Oral
Once daily
SGLT2 inhibitor
Oral
Once daily
DPP-4 inhibitor / biguanide
Indications
- Chronic Kidney Diseases
- Heart failure
- Diabetes Mellitus, Non-Insulin-Dependent
- Diabetes Mellitus, Non-Insulin-Dependent
Dosing
Chronic Kidney Diseases, Heart failure 10 mg orally once daily.
Diabetes Mellitus, Non-Insulin-Dependent Starting dose 5 mg orally once daily; may be increased to 10 mg orally once daily for additional glycemic control. Not recommended when eGFR is less than 45 mL/min/1.73 m2 for glycemic control.
Diabetes Mellitus, Non-Insulin-Dependent Take once daily with a meal; recommended starting dose is 100 mg sitagliptin and 1000 mg metformin HCl extended-release once daily; maximum daily dose is 100 mg sitagliptin and 2000 mg metformin HCl; dose of sitagliptin component limited to 50 mg once daily if eGFR falls below 45 mL/min/1.73 m2; do not split, crush, or chew tablets.
Contraindications
- Previous serious hypersensitivity reaction to dapagliflozin or any excipient in FARXIGA
- Severe renal impairment (eGFR below 30 mL/min/1.73 m2)
- Acute or chronic metabolic acidosis, including diabetic ketoacidosis
- History of a serious hypersensitivity reaction to JANUMET XR, sitagliptin, or metformin, such as anaphylaxis or angioedema
Adverse Reactions
Most common (>=2%) Female genital mycotic infections, nasopharyngitis, urinary tract infections, back pain, increased urination, male genital mycotic infections, nausea, influenza, dyslipidemia, constipation, discomfort with urination, pain in extremity
Serious Diabetic ketoacidosis, volume depletion, urosepsis and pyelonephritis, hypoglycemia with concomitant insulin or insulin secretagogues, necrotizing fasciitis of the perineum (Fournier's Gangrene), hypersensitivity reactions including anaphylaxis and angioedema
Postmarketing Necrotizing fasciitis of the perineum (Fournier's Gangrene), urosepsis and pyelonephritis, ketoacidosis, acute kidney injury, rash
Most common (>=5%) Diarrhea, upper respiratory tract infection, headache (from sitagliptin and metformin coadministration studies); nasopharyngitis (sitagliptin monotherapy); hypoglycemia, diarrhea, nausea (extended-release metformin added to glyburide)
Serious Lactic acidosis, pancreatitis, heart failure, acute renal failure, vitamin B12 deficiency, hypoglycemia with insulin or insulin secretagogues, hypersensitivity reactions, severe and disabling arthralgia, bullous pemphigoid
Postmarketing Anaphylaxis, angioedema, rash, urticaria, cutaneous vasculitis, Stevens-Johnson syndrome, hepatic enzyme elevations, fatal and non-fatal hemorrhagic and necrotizing pancreatitis, worsening renal function including acute renal failure, tubulointerstitial nephritis, severe and disabling arthralgia, bullous pemphigoid, constipation, vomiting, myalgia, rhabdomyolysis, cholestatic and hepatocellular liver injury
Pharmacology
SGLT2 inhibitor; dapagliflozin inhibits sodium-glucose cotransporter 2 in the proximal renal tubules, reducing glucose reabsorption and promoting urinary glucose excretion, while also reducing sodium reabsorption to lower cardiac pre- and afterload, suppress sympathetic activity, and decrease intraglomerular pressure via tubuloglomerular feedback.
JANUMET XR combines sitagliptin, a selective DPP-4 inhibitor that slows inactivation of incretin hormones (GLP-1 and GIP) to increase insulin release and decrease glucagon in a glucose-dependent manner, and metformin, a biguanide that decreases hepatic glucose production, reduces intestinal glucose absorption, and improves peripheral insulin sensitivity without altering insulin secretion.
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Most Common Insurance
Anthem BCBS
Farxiga
- Covered on 5 commercial plans
- PA (9/12) · Step Therapy (9/12) · Qty limit (11/12)
Janumet
- Covered on 5 commercial plans
- PA (0/12) · Step Therapy (9/12) · Qty limit (11/12)
UnitedHealthcare
Farxiga
- Covered on 4 commercial plans
- PA (0/8) · Step Therapy (0/8) · Qty limit (4/8)
Janumet
- Covered on 4 commercial plans
- PA (0/8) · Step Therapy (0/8) · Qty limit (2/8)
Humana
Farxiga
- Covered on 0 commercial plans
- PA (1/3) · Step Therapy (1/3) · Qty limit (3/3)
Janumet
- Covered on 0 commercial plans
- PA (1/3) · Step Therapy (1/3) · Qty limit (3/3)
Coverage data sourced from MMIT. Updated monthly.
Savings
Cost estimate not availableAccessia Health: Heart Failure - Private Insurance
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
No savings programs available for Janumet.
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Clinical data sourced from FDA-approved labeling. Coverage data via MMIT. Updated monthly.