PerioGard is a prescription mouth rinse containing 0.12% chlorhexidine gluconate, used to treat gingivitis between dental visits. It works by killing bacteria in the mouth that cause gum inflammation, bleeding, and plaque buildup. Dentists also commonly prescribe it after oral surgery to help prevent infection at the surgical site.
How PerioGard Treats Gingivitis
PerioGard is FDA-approved specifically for treating gingivitis, the earliest stage of gum disease. The signs it targets include red, swollen gums and gums that bleed when your dentist probes them during a cleaning. It’s designed to be used as part of a broader treatment plan that includes professional dental cleanings, not as a standalone fix.
The active ingredient, chlorhexidine gluconate, is one of the most effective antimicrobial agents available for oral use. It binds to surfaces inside your mouth, including your teeth, gums, and tongue, and continues killing bacteria for hours after you spit it out. This lingering effect is what makes it more effective than standard over-the-counter mouthwashes, which stop working almost immediately.
Use After Oral Surgery
Beyond gingivitis, dentists and oral surgeons frequently prescribe PerioGard after procedures like dental implant placement, tooth extractions, and periodontal surgery. When you can’t brush normally around a surgical site, the rinse helps keep bacterial levels low and reduces the risk of post-surgical infection. In these cases, it’s typically started the day after surgery and used twice daily until your surgeon tells you to stop.
How to Use It
The standard dose is 15 mL (half a fluid ounce), swished around the mouth for 30 seconds, then spit out. You use it twice a day: once after breakfast and once before bed, both times after brushing your teeth. The cap on the bottle doubles as a measuring cup, with a fill line marked at the 15 mL dose. Do not dilute it with water, and do not swallow it.
One important detail that many people miss: common toothpaste ingredients can actually deactivate chlorhexidine. A foaming agent found in most toothpastes (sodium lauryl sulfate) significantly reduces PerioGard’s bacteria-killing ability, even when the two products are used 30 minutes apart. To get the full benefit, rinse your mouth thoroughly with water after brushing, or ask your dentist about using an SLS-free toothpaste during your treatment period.
Side Effects to Expect
The most common side effect is brown staining on your teeth, tongue, and dental restorations like fillings or crowns. This staining is cosmetic, not permanent, and your dentist can remove it during a professional cleaning. It tends to build up more if you drink a lot of tea, coffee, or red wine while using the rinse.
Many people also notice a temporary change in taste. Foods and drinks may taste different or slightly muted while you’re using PerioGard, and for a short time after you stop. Some users experience increased tartar buildup on their teeth, which is another reason the rinse is meant to be used alongside regular dental visits rather than on its own.
Serious allergic reactions are rare but have been reported with chlorhexidine-containing dental products, including cases of anaphylaxis. If you develop hives, difficulty breathing, or swelling of your face or throat after using PerioGard, seek emergency medical attention.
Prescription Requirements
PerioGard is a prescription-only product. You cannot buy it over the counter. Your dentist or oral surgeon will prescribe it based on the severity of your gum disease or as part of post-surgical care. It should not be used by anyone with a known allergy to chlorhexidine gluconate or any of the rinse’s other ingredients.
Because it’s meant to complement professional treatment rather than replace it, most prescriptions cover a defined period, often aligned with your next dental appointment. Using it indefinitely without dental supervision increases the risk of staining and tartar buildup without the professional cleanings needed to manage those effects.