INVOKANA
Clinical safety rating: caution
Comprehensive clinical and safety monograph for INVOKANA (INVOKANA).
Sodium-glucose cotransporter 2 (SGLT2) inhibitor; reduces renal glucose reabsorption, increasing urinary glucose excretion.
| Metabolism | Primarily via O-glucuronidation by UGT2B4, UGT1A9, and UGT1A1; minor CYP3A4 metabolism; ~33% excreted unchanged in urine, ~51% in feces. |
| Excretion | Primarily excreted unchanged in urine (33%) and feces (52%) as parent drug and glucuronide metabolites; renal clearance accounts for 70% of total clearance, with 51% renally excreted as unchanged drug. |
| Half-life | Terminal elimination half-life is 10.6 hours (range 9.5–12.5 h) in healthy subjects; allows once-daily dosing. Half-life increases to 16 hours in moderate renal impairment and 22 hours in severe renal impairment. |
| Protein binding | 94% bound to plasma proteins, primarily to albumin. |
| Volume of Distribution | Volume of distribution is 118 L (1.69 L/kg for a 70 kg individual), indicating extensive extravascular distribution into tissues beyond plasma volume. |
| Bioavailability | Oral bioavailability cannot be determined due to lack of an intravenous formulation, but is considered high (65–80%) based on urinary recovery of drug and metabolites; maximum plasma concentration is reached 1–2 hours post-dose. |
| Onset of Action | Onset of urinary glucose excretion occurs within 24 hours of first oral dose; maximal effect on HbA1c reduction is observed after 4–6 weeks of chronic dosing. |
| Duration of Action | Duration of action is approximately 24 hours, supporting once-daily dosing. Duration of urinary glucose excretion persists for the dosing interval; clinically, efficacy in glycemic control requires consistent daily administration. |
| Action Class | SGLT2 inhibitors |
| Brand Substitutes | Prominad Tablet, Sulisent 100mg Tablet |
100 mg orally once daily, before the first meal of the day; may increase to 300 mg once daily if tolerated and eGFR is adequate.
| Dosage form | TABLET |
| Renal impairment | Initiate only if eGFR >= 30 mL/min/1.73 m2. If eGFR is 30 to <60, continue current dose; if eGFR <30, discontinue. Not recommended for use when eGFR persistently <30. |
| Liver impairment | No dose adjustment required for mild to moderate hepatic impairment (Child-Pugh A or B). Not recommended for severe hepatic impairment (Child-Pugh C). |
| Pediatric use | Safety and efficacy in pediatric patients (<18 years) have not been established. |
| Geriatric use | No initial dose adjustment required; monitor renal function more frequently due to age-related decline in GFR. Use caution in patients >=75 years due to limited therapeutic benefit. |
| 1st trimester | Consult provider |
| 2nd trimester | Consult provider |
| 3rd trimester | Consult provider |
Clinical note
Comprehensive clinical and safety monograph for INVOKANA (INVOKANA).
| Breastfeeding | Canagliflozin is excreted into rat milk; human data are absent. The M/P ratio is unknown. Due to potential adverse effects on neonatal renal development, breastfeeding is not recommended during therapy. |
| Teratogenic Risk | Invokana (canagliflozin) is contraindicated in the second and third trimesters due to associated fetal renal toxicity. First trimester exposure data are limited; animal studies show renal development effects. Use not recommended in pregnancy. |
| Fetal Monitoring |
■ FDA Black Box Warning
None.
| Serious Effects |
["History of serious hypersensitivity reaction to canagliflozin","Severe renal impairment (eGFR <30 mL/min/1.73 m²) or ESRD on dialysis","Type 1 diabetes mellitus (not approved and may increase DKA risk)"]
| Precautions | ["Diabetic ketoacidosis (including euglycemic DKA)","Acute kidney injury and impairment in renal function","Urosepsis and pyelonephritis","Lower limb amputation (especially toe amputations)","Hypotension","Hyperkalemia","Genital mycotic infections","Increased LDL-C","Urinary tract infections"] |
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| If exposure occurs, monitor fetal renal function via ultrasound for oligohydramnios and kidney development. Maternal monitoring includes renal function, serum electrolytes, and blood glucose. Assess for volume depletion and hypotension. |
| Fertility Effects | In animal studies, no direct effects on fertility observed. However, canagliflozin may impact menstrual cycles due to weight loss and metabolic changes. Human data insufficient to determine clinical significance. |