Canker sores, also known as aphthous ulcers, are small lesions that form on the soft tissues inside the mouth and can cause significant pain, especially when eating or speaking. A popular at-home remedy, often referred to as a "lite" version of prescription "Magic Mouthwash," involves combining over-the-counter liquid Benadryl and Maalox. This mixture is designed to provide temporary relief by coating and protecting the irritated tissue and helping to reduce the sensation of pain.
The Role of Each Ingredient
To understand why this mixture works, it's helpful to know the function of each component:
- Maalox (or a generic equivalent of aluminum hydroxide/magnesium hydroxide): This antacid serves as the coating agent in the mixture. It adheres to the sore, creating a physical barrier that protects the ulcer from irritants like acidic foods, beverages, or spicy foods. This protective layer allows the sore to heal without constant irritation, providing relief from discomfort. The coating also helps the antihistamine stay in contact with the sore.
- Liquid Benadryl (diphenhydramine hydrochloride): The antihistamine in Benadryl helps reduce pain and inflammation. When used as a rinse and spit, the diphenhydramine can act as a local anesthetic, providing a numbing effect that helps manage the pain associated with the canker sore.
Step-by-Step Mixing Instructions
Creating this over-the-counter mouth rinse is a straightforward process. It is important to only use liquid diphenhydramine (Benadryl) and a liquid antacid containing aluminum hydroxide and magnesium hydroxide (Maalox or Mylanta). Do not use antacids containing aspirin or bismuth subsalicylate, such as Kaopectate or Pepto-Bismol, as they can cause further irritation.
- Gather your ingredients: You will need liquid Maalox (or a suitable generic equivalent) and liquid Benadryl (diphenhydramine).
- Combine ingredients: Mix equal amounts of both liquids. The exact quantity can be adjusted based on the area of the mouth being treated.
- Shake well: Stir or shake the mixture thoroughly until it is well combined.
- Swish and spit: Use a small amount of the mixture, swish it around in your mouth for about one minute, and then spit it out completely. The liquid is for topical use in the mouth and should not be swallowed.
- Refrigerate: Storing the mixture in the refrigerator can provide a cooling, soothing sensation upon application.
Safety Precautions and Best Practices
While this remedy is widely used, it is important to take certain safety precautions:
- Do not swallow the rinse: The primary risk is swallowing the diphenhydramine, which can cause drowsiness. The Maalox is generally safe if swallowed, but the Benadryl component means the mixture should be spit out.
- Use as needed: The rinse is intended for temporary relief and should be used according to package directions or as advised by a healthcare professional.
- Avoid eating or drinking immediately after: For the coating to be effective, avoid consuming food or liquids for at least 30 minutes after using the rinse.
- Consult a professional: If canker sores are large, persistent for more than two weeks, or if you experience a fever or illness alongside them, you should consult a healthcare specialist. This is especially important for children, who should only use this under a doctor's guidance.
Comparison of Canker Sore Remedies
| Remedy | Pros | Cons | Best For |
|---|---|---|---|
| Maalox/Benadryl Rinse | Easy to make with OTC ingredients. Provides both coating and anesthetic effect. | Can cause drowsiness if swallowed. Not a cure, only symptomatic relief. | Temporary relief for moderate to severe pain, especially before meals or bedtime. |
| Saltwater Rinse | Simple, cheap, and effective for cleansing and reducing inflammation. | Can be painful if salt gets directly on the sore. Offers no coating or numbing effect. | Mild pain, general mouth cleansing, and flushing out debris. |
| OTC Numbing Gels | Applied directly to the sore for targeted numbing (e.g., Orajel, Anbesol). | Numbing effect is often short-lived. Can be messy to apply to hard-to-reach areas. | Quick, localized pain relief for small, easily accessible canker sores. |
| Prescription 'Magic Mouthwash' | Often includes stronger numbing agents (viscous lidocaine), steroids, or antifungals for more potent relief. | Requires a doctor's prescription. May have more side effects. | Severe, persistent canker sores or those associated with other systemic issues. |
Conclusion: Responsible Use of Canker Sore Remedies
The DIY mixture of Maalox and Benadryl is a widely known remedy for the pain of canker sores, offering temporary relief by coating the area and providing a localized numbing effect. However, it is not a cure and should be used with caution, particularly by ensuring the mixture is spit out completely. While effective for temporary management of discomfort, it is crucial to consult a doctor if canker sores are severe, unusually large, or do not show signs of healing within two weeks. For many, simple home remedies like saltwater rinses or over-the-counter gels may also provide sufficient relief. Always prioritize safety and professional medical advice when dealing with persistent or severe health issues like recurring mouth sores. For more information on general canker sore management, see the Cleveland Clinic's guidance.
