N
InsightHorizon Digest

What are the side effects of chlorhexidine gluconate oral rinse

Author

Joseph Russell

Updated on April 05, 2026

Chlorhexidine gluconate can cause a rare but serious allergic reaction that may be life-threatening. Get emergency medical help if you have: hives, severe skin rash; wheezing, difficult breathing; cold sweats, feeling light-headed; swelling of your face, lips, tongue, or throat.

Is chlorhexidine gluconate oral rinse safe?

Chlorhexidine gluconate can cause a rare but serious allergic reaction that may be life-threatening. Get emergency medical help if you have: hives, severe skin rash; wheezing, difficult breathing; cold sweats, feeling light-headed; swelling of your face, lips, tongue, or throat.

When should you not use chlorhexidine?

Do not use it on skin areas that have cuts or scrapes. Apply the medicine in a well-ventilated place and do not use it while you are smoking. Adults, teenagers, and children 2 months of age and older: Open the pouch and use the handle to remove the swabstick applicator.

Which is a possible side effect of chlorhexidine?

The most common side effects associated with chlorhexidine gluconate oral rinses are: 1) an increase in staining of teeth and other oral surfaces; 2) an increase in calculus formation; and 3) an alteration in taste perception, see WARNINGS and PRECAUTIONS.

How many days should I use chlorhexidine gluconate oral rinse?

Recommended use is twice daily oral rinsing for 30 seconds, morning and evening after toothbrushing. Usual dosage is 15ml (marked in cap) of undiluted Peridex. Patients should be instructed to not rinse with water or other mouthwashes, brush teeth or eat immediately after using Peridex.

Does chlorhexidine make teeth sensitive?

Your teeth might be extra sensitive following your treatment. Some patients need professional whitening treatments, and some experience hardly any staining as a result of chlorhexidine mouthwash.

What happens if you swallow chlorhexidine mouthwash?

Chlorhexidine is not well absorbed when swallowed, and some stomach irritation or nausea is typically all that will occur after ingestion of small amounts. However, serious adverse effects can occur when larger amounts of chlorhexidine are swallowed.

How do I remove chlorhexidine stains from my teeth?

Brush More Often to Remove Chlorhexidine Stains Brushing your teeth for two minutes twice a day is crucial to good oral hygiene. Combine brushing with flossing once per day and regular visits to your dentist to get the most out of your oral health routine.

How long do chlorhexidine side effects last?

Sometimes this effect may last up to 4 hours after you use the oral rinse. In most cases, this effect will become less noticeable as you continue to use the medicine.

Does Listerine have chlorhexidine?

The effects of two daily 10-mL rinses with 0.12% chlorhexidine digluconate, the quaternary ammonium compound cetylpyridinium chloride, the phenolic compound Listerine, or the plant alkaloid sanguinarine were compared with those of rinses with a placebo.

Article first time published on

What happens if you drink water after chlorhexidine?

Do not rinse your mouth with water immediately after using chlorhexidine, since doing so will increase the bitterness. Rinsing may also decrease the effect of the medicine. Chlorhexidine may change the way foods taste to you.

Can you drink water after chlorhexidine mouthwash?

Chlorhexidine oral rinse should be used after you have brushed and flossed your teeth. Rinse the toothpaste completely from your mouth with water before using the oral rinse. Do not eat or drink for several hours after using the oral rinse.

Is chlorhexidine toxic?

Chlorhexidine is non-flammable. At high concentrations Chlorhexidine is harmful, however at the low concentrations typically used for oral rinses and skin cleaners it can be safely used. In spite of the relatively non-toxic profile of chlorhexidine, there have been incidences of anaphylactic reactions.

Is chlorhexidine better than Listerine?

This study has demonstrated that chlorhexidine was superior to Listerine and Meridol in its ability to maintain low plaque scores and gingival health during this 3-week period of no mechanical oral hygiene.

Is chlorhexidine an antibiotic?

Chlorhexidine is a bisbiguanide antiseptic, disinfectant and preservative that is effective against a wide range of bacteria, and also a broad-spectrum antimicrobial agent that is active against aerobic and anaerobic bacteria [1, 2].

How long can you use chlorhexidine gluconate?

Chlorhexidine is an antiseptic against a broad spectrum of bacteria. The authors found high-quality evidence that short-term (4-6 weeks) and longer-term (6 months) use of chlorhexidine mouthwash in addition to usual toothbrushing and cleaning leads to a large reduction in the build-up of plaque.

Can chlorhexidine cause stomach problems?

An overdose of chlorhexidine would occur only if the medicine were swallowed. Overdose symptoms may include nausea, stomach pain, or the appearance of being drunk.

Is chlorhexidine a neurotoxin?

More recently, Doan et al. found that chlorhexidine was neurotoxic at a concentration of 0.01% (the lowest concentration tested) when applied directly to neurons 22.

Is chlorhexidine same as hydrogen peroxide?

Chlorhexidine (CHX) and Hydrogen peroxide (HP) are potent antibacterial agents that are used in controlling dental plaque. However, both agents bear undesired side-effects.

Can I use salt water instead of chlorhexidine?

Salt water was as effective as chlorhexidine in reducing dental plaque (p = 0.19) and A. actinomycetemcomitans (p = 0.35) count and while chlorhexidine was superior against S. mutans (p = 0.001), L.

Is chlorhexidine a carcinogen?

Chlorhexidine Digluconate was not carcinogenic in a 2-year drinking water study.

What can I use instead of chlorhexidine?

antiseptic products prior to using chlorhexidine gluconate. Consider using alternative antiseptics such as povidone-iodine, alcohols, benzalkonium chloride, benzethonium chloride, or parachlorometaxylenol (PCMX) when any previous allergy to chlorhexidine gluconate is documented or suspected.

Does Colgate mouthwash contain chlorhexidine?

Colgate® PerioGard® Rinse (Chlorhexidine Gluconate Oral Rinse, 0.12%) is a broad spectrum anti-microbial oral rinse clinically proven safe and effective for treating gingivitis. It has a fresh mint taste and is alcohol free.

Can you buy chlorhexidine gluconate over the counter?

Chlorhexidine gluconate generally requires a prescription in the United States which means that one cannot just buy chlorhexidine online without first getting a prescription from a medical provider. As a result, prescription chlorhexidine mouthwash is not available over the counter.

Which is better hydrogen peroxide or chlorhexidine gluconate?

Within the limitations of this study, it can be concluded that CHX is more effective than H2O2 in reducing gingival index, pocket depth, and improving the clinical attachment level. CHX is the most effective agent as an adjunct to routine oral hygiene procedures.

Can I swallow my saliva after mouthwash?

After rinsing, spit it out. Don’t swallow it. Timing. Chlorhexidine should be used after brushing.

Is chlorhexidine good for sore throat?

With the dental treatments, chlorhexidine helps prevent the build-up of plaque for up to 12 hours by forming a protective coating over your gums and teeth. This helps prevent or treat mouth infections and gum disease. It also helps ease your symptoms if you have a mouth ulcer or sore throat.

Can I drink water after using chlorhexidine gluconate?

Do not swallow the solution or mix it with any other substance. After using chlorhexidine, wait at least 30 minutes before rinsing your mouth with water or mouthwash, brushing your teeth, eating, or drinking.

How do you make gingivitis go away?

  1. Brush Your Teeth Twice a Day. Use a soft-bristled toothbrush to gently brush around each tooth. …
  2. Floss Your Teeth Once a Day. Plaque loves to hide in between teeth where toothbrush bristles can’t reach. …
  3. Use a Fluoride Mouth Rinse. …
  4. Don’t Skip Dental Appointments. …
  5. Avoid Sugary Foods and Beverages.

Which is the best mouthwash for gum disease?

  • Best Overall: TheraBreath Healthy Gums Periodontist Formulated 24-Hour Oral Rinse. …
  • Best Budget: ACT Anticavity Zero Alcohol Fluoride Mouthwash. …
  • Best Alcohol-Free: Listerine Zero Cool Mint Mouthwash. …
  • Best Sensitive: CloSYS Ultra Sensitive Mouthwash. …
  • Best for Dry Mouths: Colgate Hydris Dry Mouth Mouthwash.

Which mouthwash kills the most oral bacteria?

Three mouthwashes were used to determine which would kill the most oral bacteria. The Xylitol mouthwash killed the most bacteria at a 84% reduction, then the alcohol based mouthwash at 77% reduction and lastly the chemical substitute mouthwash at a 145% growth.