Chlorhexidine Gluconate + Metronidazole is a combination of Chlorhexidine Gluconate (Chlorhexidine Gluconate), a broad-spectrum antiseptic, and Metronidazole (Metronidazole), an antibacterial agent active mainly against anaerobic bacteria. It is used as an adjunct in the management of periodontal infections, gingivitis, and plaque-related gum disease. The combination helps reduce microbial load in the oral cavity and supports control of gum inflammation when used along with regular dental hygiene practices.

Chlorhexidine Gluconate + Metronidazole is a combination therapy formulated with Chlorhexidine Gluconate, a broad‑spectrum antiseptic, and Metronidazole, an antibiotic active against anaerobic bacteria. It is indicated for the local management of periodontal infections such as gingivitis and periodontitis, and may also be used to help reduce infection risk following oral surgical procedures.

Metronidazole provides antibacterial activity against anaerobic organisms frequently present in periodontal pockets. By interfering with bacterial DNA synthesis, it helps control bacterial growth and supports the resolution of infection.

Chlorhexidine Gluconate reduces microbial load on oral surfaces. It binds to teeth and mucosa, remaining active for several hours and limiting recolonisation of bacteria and fungi. This sustained antiseptic effect supports plaque control and contributes to reduced gum inflammation.

The product is commonly formulated as a bio‑adhesive gel, ensuring prolonged contact with affected gum tissues. This localised delivery enhances antimicrobial activity at the site of infection and promotes healing.

Adverse effects may occur, including temporary tooth staining, mild taste changes, or oral irritation. Hypersensitivity reactions are uncommon but may develop. Most effects are reversible and manageable under professional supervision.

Dentists and doctors may prescribe Chlorhexidine Gluconate + Metronidazole for:

Periodontal Infections

Treatment of acute and chronic periodontitis or severe gingivitis.

Pericoronitis

Management of infection and inflammation around a partially erupted tooth (often a wisdom tooth).

Vincent’s Disease

Also known as ANUG (Acute Necrotising Ulcerative Gingivitis).

Post-Surgical Antisepsis

To prevent bacterial colonisation following tooth extractions, dental implants, or gum surgery.

Infected Mouth Ulcers

To treat or prevent secondary bacterial infection in significant oral sores.

Chlorhexidine Gluconate + Metronidazole provides benefits such as:

• Synergistic Power: The two ingredients work together to cover a wider variety of bacteria than either would alone.

• Targeted Anaerobic Coverage: Metronidazole specifically eliminates the difficult-to-treat bacteria found in deep gum pockets.

• Extended Action: Chlorhexidine binds to oral proteins, creating a protective "reservoir" of antiseptic action.

• Reduction in Bleeding: Helps resolve the underlying infection that causes gums to bleed and swell.

• Support for Healing: By clearing the bacterial burden, it allows the oral tissues to repair themselves more efficiently.

• Localised Treatment: Delivers medicine directly to the site of infection, reducing the need for systemic (oral) antibiotics.

Chlorhexidine Gluconate + Metronidazole is generally well tolerated, but some localised effects are to be expected.

Common Side Effects

• Altered taste sensation (often described as metallic or bitter)

• Temporary staining of the teeth, tongue, or dental restorations

• Mild stinging or dryness in the mouth

• Increased buildup of tartar (calculus)

• Furry feeling on the tongue

Uncommon Side Effects

• Nausea or stomach discomfort (if a large amount of gel is swallowed)

• Mild oral irritation or redness of the gums

• Sensitivity to hot or cold foods

• Headaches

Serious Side Effects

• Severe Allergic Reaction: Hives, swelling of the face or throat, or difficulty breathing.

• Oral Sloughing: Significant peeling or blistering of the oral lining.

• Secondary Infection: Overgrowth of non-susceptible organisms, such as oral thrush (fungal infection).

It should be used exactly as prescribed by a dentist or healthcare professional.

• Apply a thin layer of the gel to the affected gum area using a clean fingertip or as directed by your doctor

• Use after brushing and gently drying the area for better contact with the gums

• Avoid eating, drinking, or rinsing your mouth for at least 30 minutes after application

• Use only the amount and frequency prescribed; do not overuse

• Continue good oral hygiene practices such as brushing and flossing during treatment

• Follow the full duration of therapy even if symptoms improve early, unless advised otherwise by your dentist

Chlorhexidine Gluconate + Metronidazole utilises two distinct pathways to clear oral infections:

• Chlorhexidine binds to bacterial cell walls and disrupts membrane integrity, increasing permeability and leading to leakage of cellular contents. This results in a reduction of the overall microbial load at the application site and helps control plaque-associated bacteria.

• Metronidazole is selectively active against anaerobic bacteria commonly involved in periodontal infections. Inside these organisms, it is converted into active compounds that interfere with bacterial DNA synthesis, leading to inhibition of bacterial growth and cell death.

• To prevent deactivation of Chlorhexidine, rinse your mouth with water after brushing your teeth and wait a few minutes before applying the gel.

• Avoid using mouthwashes containing alcohol while using this product to prevent irritation.

• Professional dental cleanings can easily remove any temporary surface stains that occur during treatment.

Store Chlorhexidine Gluconate + Metronidazole at room temperature in a cool, dry place. Keep the tube tightly closed when not in use and protect it from direct sunlight. Ensure it is stored out of the reach of children and pets.

• Alcohol (CAUTION): Avoid alcohol during treatment and for 24 hours after completion to avoid a "disulfiram-like" reaction (severe nausea and vomiting).

• Staining Substances (MILD): Consumption of tea, coffee, and red wine can increase the intensity of the temporary staining associated with Chlorhexidine.

• Warfarin (MILD): Metronidazole can potentially increase the effect of blood thinners, though this is rare with topical use.

• Anionic Detergents (MILD): Some ingredients in toothpaste and other mouthwashes can stop Chlorhexidine from working properly.

• Disulfiram (CAUTION): Combined use with Metronidazole may lead to psychotic reactions.

• Blood Disorders (CAUTION): Metronidazole should be used with caution in patients with a history of blood cell disorders.

• Oral Thrush (CAUTION): Use may occasionally lead to an overgrowth of yeast in the mouth.

• Hypersensitivity (SEVERE): Do not use if you have a known allergy to chlorhexidine or nitroimidazole antibiotics.

Ingesting a large amount of the gel may cause nausea, dizziness, or a metallic taste. If accidental ingestion occurs, contact a healthcare professional or a poison control center for guidance.

If you miss a dose, apply it as soon as you remember. If it is almost time for your next dose, skip the missed one. Do not apply a double amount of gel to compensate.