Fournier's Gangrene: The SGLT2 Label Warning Explained
[Glossary · How doses act in the body]

Fournier's gangrene

Also called Fournier gangrene, necrotizing fasciitis of the perineum, necrotizing soft tissue infection · Reviewed

Definition: Fournier's gangrene is a rare, life-threatening infection that destroys tissue in the genital area. SGLT2 inhibitor labels call it necrotizing fasciitis of the perineum and list it under genital and urinary infections.

What the labels say

Fournier's gangrene on four current US labels
LabelWhat it says
Jardiance (empagliflozin)Serious infections including Fournier's gangrene have occurred, some needing surgery or causing death
Farxiga (dapagliflozin)Some cases needed several surgeries or caused death
Invokana (canagliflozin)Some led to several surgeries or death
Steglatro (ertugliflozin)Has occurred with SGLT2 inhibitors; described as a rare, life-threatening infection of the genital area

The Jardiance and Farxiga labels say pain, redness or swelling of the genital area with fever or feeling unwell needs prompt evaluation. The Steglatro label says these infections have occurred with SGLT2 inhibitors as a class, and combination tablets with an SGLT2 inhibitor, such as Glyxambi and Invokamet, carry the same warning.

How this kind of infection behaves

MedlinePlus describes necrotizing soft tissue infection as a rare but very severe bacterial infection that can destroy muscle, skin and the tissue beneath. It says a painful, bruise-like area can grow in less than an hour and that treatment, with surgery to remove dead tissue and antibiotics through a vein, is needed right away.

Why it matters for your log

The same labels report the more common genital yeast infections. A note of when any genital symptoms began, and whether fever came with them, helps a clinician tell the two apart quickly.

Read more on Dose Track: Genital yeast infections on SGLT2 medicines · Jardiance side effects · Farxiga side effects · Invokana side effects

General education drawn from labels and published studies, not personal medical advice. Your prescriber, pharmacist and the label that came with your product are the final word.

Frequently asked questions

Which diabetes drugs warn about Fournier's gangrene?+
SGLT2 inhibitor labels, including Jardiance, Farxiga, Invokana and Steglatro, list it under serious genital and urinary infections.
What are the warning signs on the labels?+
The Jardiance and Farxiga labels say pain, redness or swelling of the genital area together with fever or feeling unwell needs prompt evaluation.