Table 1.
Potential adverse events | Practical considerations |
---|---|
Any patient initiating SGLT2is | |
Volume depletion | Increased risk with concomitant use of SGLT2i and diuretic; a diuretic dose adjustment may need to be considered |
Educate patients about the potential for orthostatic hypotension and the importance of monitoring body weight and blood pressure on a regular basis, particularly in the first week of SGLT2i therapy | |
Provide preemptive guidance to patients to contact a HCP if they lose ≥ 1.4 kg over a 24-h period, ≥ 1.8 kg in a week, or in a setting of symptomatic hypotension | |
Genital and UTIs | Mycotic infections are more common among female and uncircumcised male individuals |
HCP should reinforce the importance of adequate hygiene | |
Advise patients to immediately contact a HCP to report any genital/perineal tenderness, redness, or swelling | |
There is no significant increase in the risk of UTIs | |
Renal injury | Baseline and periodic monitoring of renal function is recommended when starting SGLT2i therapy [17] |
Modest initial decrease in eGFR (3–4 mL/min/1.73 m2) expected with SGLT2i initiation | |
In patients with impaired renal function, monitoring renal function is recommended during the first few weeks of SGLT2i therapy [17, 18, 51, 53] | |
Cases of acute kidney injury are rare, except in concert with volume depletion [18] | |
Adverse drug–drug interaction | Pharmacokinetic drug–drug interactions are minimal |
Co-administration of canagliflozin, a P-glycoprotein substrate, with digoxin may increase digoxin plasma levels. It is important to monitor digoxin levels and any signs or symptoms of toxicity with concomitant use of canagliflozin and digoxin | |
Specific considerations in patients with T2D | |
Hypoglycemia | This is uncommon; however, there is an increased risk with concomitant use of sulfonylureas or insulin |
Dose adjustments or discontinuation of the sulfonylurea or reduction of the total daily insulin dose by < 20% could reduce the risk of hypoglycemia [51] | |
DKA | Advise patients about DKA risk, identifying the following symptoms of DKA: fruity breath odor, thirst, polyuria, nausea/vomiting, abdominal pain, confusion, and fever |
For high-risk patients, home monitoring with urine ketone test strips may be advised | |
Precautions to take to lower DKA risk: | |
Avoid preemptive, substantial reductions (> 20%) in daily insulin dose [51] | |
Use caution with low carbohydrate diets, which may result in excessive ketosis | |
Limit excessive alcohol intake | |
Discontinue SGLT2i ≥ 3 days before surgery to prevent postoperative ketoacidosis [17] | |
Asymptomatic elevations in β-hydroxybutyrate are frequent with SGLT2is, but only a fraction of cases lead to overt DKA | |
Lower limb amputations | Predominantly toe and metatarsal |
More apparent with the SGLT2i canagliflozin | |
Increased risk with previous amputations or with established peripheral artery disease | |
Educate patients, especially those with diabetic neuropathy, about performing regular foot exams and seeing a podiatrist annually |
DKA diabetic ketoacidosis, eGFR estimated glomerular filtration rate, HCP healthcare provider, SGLT2i sodium–glucose cotransporter 2 inhibitor, T2D type 2 diabetes, UTIs urinary tract infections