Overview
11 DESCRIPTION Dapagliflozin, an inhibitor of SGLT2, is described chemically as D-glucitol, 1,5-anhydro-1- C -[4-chloro-3-[(4-ethoxyphenyl)methyl]phenyl]-, (1 S )-, compounded with (2 S )-1,2-propanediol, hydrate (1:1:1). The empirical formula is C 21 H 25 ClO 6 •C 3 H 8 O 2 •H 2 O and the molecular weight is 502.98.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Sodium-glucose cotransporter 2 (SGLT2), expressed in the proximal renal tubules, is responsible for the majority of the reabsorption of filtered glucose from the tubular lumen. Dapagliflozin is an inhibitor of SGLT2. By inhibiting SGLT2, dapagliflozin reduces reabsorption of filtered glucose and thereby promotes urinary glucose excretion. Dapagliflozin also reduces sodium reabsorption and increases the delivery of sodium to the distal tubule. This may influence several physiological functions including, but not restricted to, lowering both pre- and afterload of the heart and downregulation of sympathetic activity, and decreased intraglomerular pressure which is believed to be mediated by increased tubuloglomerular feedback. 12.
Indications
- 1 INDICATIONS AND USAGE FARXIGA (dapagliflozin) is indicated: • To reduce the risk of sustained eGFR decline, end-stage kidney disease, cardiovascular death, and hospitalization for heart failure in adults with chronic kidney disease at risk of progression. • To reduce the risk of cardiovascular death, hospitalization for heart failure, and urgent heart failure visit in adults with heart failure. • To reduce the risk of hospitalization for heart failure in adults with type 2 diabetes mellitus and either established cardiovascular disease or multiple cardiovascular risk factors.
Common Doses
- 5 mg
- 10 mg
- 45 mL
Dosage
2 DOSAGE AND ADMINISTRATION • Assess volume status and correct volume depletion before initiating. (2.1) eGFR (mL/min/1.73 m 2 ) Recommended Dose eGFR 45 or greater To improve glycemic control, the recommended starting dose is 5 mg orally once daily. Dose can be increased to 10 mg orally once daily for additional glycemic control. For all other indications, the recommended starting dose is 10 mg orally once daily. eGFR 25 to less than 45 10 mg orally once daily eGFR less than 25 Initiation is not recommended; however, patients may continue 10 mg orally once daily to reduce the risk of eGFR...
Contraindications
- 4 CONTRAINDICATIONS • History of a serious hypersensitivity reaction to FARXIGA, such as anaphylactic reactions or angioedema [see Adverse Reactions (6.1) ] . • History of serious hypersensitivity reaction to FARXIGA. (4)
Side Effects
- 6 ADVERSE REACTIONS The following important adverse reactions are described below and elsewhere in the labeling: • Diabetic Ketoacidosis in Patients with Type 1 Diabetes Mellitus and Other Ketoacidosis [see Warnings and Precautions (5.1) ] • Volume Depletion [see Warnings and Precautions (5.2) ] • Urosepsis and Pyelonephritis [see Warnings and Precautions (5.3) ] • Hypoglycemia with Concomitant Use with Insulin and Insulin Secretagogues [see Warnings and Precautions (5.4) ] • Necrotizing Fasciitis of the Perineum (Fournier’s Gangrene) [see Warnings and Precautions (5.
Interactions
- 7 DRUG INTERACTIONS Table 5: Clinically Relevant Interactions with FARXIGA Insulin or Insulin Secretagogues Clinical Impact The risk of hypoglycemia may be increased when FARXIGA is used concomitantly with insulin or insulin secretagogues (e.g., sulfonylurea) [see Warnings and Precautions (5.4) ] . Intervention Concomitant use may require lower doses of insulin or the insulin secretagogue to reduce the risk of hypoglycemia. Lithium Clinical Impact Concomitant use of an SGLT2 inhibitor with lithium may decrease serum lithium concentrations.