Janssen Inc. issued the warning Monday through Health Canada about Terazol 7 Vaginal Cream and Terazol 3 Dual-Pak Vaginal Cream/Vaginal Ovules, which are used to treat infections caused by the organism Candida albicans.
The company says there have been "very rare cases" of serious or potentially fatal anaphylaxis and toxic epidermal necrolysis reported by some patients using Terazol.
Symptoms of anaphylaxis include a swollen face, lips, mouth, tongue or throat, and difficulty swallowing or breathing.
Toxic epidermal necrolysis, or TEN, causes flu-like symptoms, fever, itching of the skin, mouth sores, and a tender or painful blistering rash that spreads and causes skin to shed over much of the body.
Consumers using Terazol who experience any of these symptoms should stop treatment and immediately call their doctor or pharmacist.