Vagisil Ingredients
Vagisil contains benzocaine 5% as the active ingredient, with inactive ingredients including alcohol, FD&C Red No. 40, glycerin, natural flavors, PEG-40 hydrogenated castor oil, polyvinylpyrrolidone (PVP), sucralose, and water. 1
Active Ingredient
- Benzocaine 5% is the topical anesthetic that provides temporary relief from vaginal itching and discomfort 1
Inactive Ingredients
The formulation includes the following inactive components 1:
- Alcohol
- FD&C Red No. 40 (coloring agent)
- Glycerin
- Natural flavors
- PEG-40 hydrogenated castor oil
- Polyvinylpyrrolidone (PVP)
- Sucralose
- Water
Critical Safety Considerations
Benzocaine-Associated Methemoglobinemia Risk
While Vagisil is generally safe when used as directed for 7 days, benzocaine can cause life-threatening methemoglobinemia in rare cases, particularly with excessive or prolonged use. 2, 3
- Methemoglobinemia has been reported in a 50-year-old woman using Vagisil (20% benzocaine formulation) for chronic vaginal itching 2
- The condition presents with slate-gray cyanosis, low oxygen saturation, and functional anemia despite absence of respiratory distress 4
- Patients should not exceed 7 days of use or apply lavishly over wide areas of excoriation, as this increases risk of toxic concentrations 3
Important Clinical Caveats
- Vagisil only treats symptoms (itching) and does not address the underlying cause of vaginal discomfort 5, 6
- The CDC recommends that women with vaginal symptoms should receive proper diagnostic evaluation including wet mount microscopy and vaginal pH testing before self-treatment 5, 6
- Topical anesthetics like benzocaine delay appropriate diagnosis and treatment of conditions like vulvovaginal candidiasis, bacterial vaginosis, or trichomoniasis 6
- For confirmed vulvovaginal candidiasis, the CDC recommends topical azole antifungals (clotrimazole, miconazole) or oral fluconazole 150 mg as first-line treatment, which achieve 80-90% cure rates 5, 7
When to Seek Medical Evaluation
Women should seek medical care rather than continuing self-treatment with Vagisil if: 5, 6
- Symptoms persist beyond 7 days of use
- Symptoms recur within 2 months
- They experience recurrent episodes (≥3 per year)
- They develop cyanosis or other signs of methemoglobinemia