How does chlorhexidine work?
Chlorhexidine disrupts the cell membranes of bacteria and fungi, killing them and preventing further growth.
What is chlorhexidine used to treat?
Chlorhexidine is commonly used for:
- Mouth infections (such as gingivitis and oral thrush)
- Preventing dental plaque and gum disease
- Cleaning wounds and preventing infections
- Pre-surgical skin disinfection
- Catheter care and medical device sterilisation
Who can use chlorhexidine?
Chlorhexidine is suitable for most adults and children, depending on the condition being treated.
Who might not be able to use chlorhexidine?
Chlorhexidine may not be suitable if you:
- Have a history of allergic reactions to chlorhexidine or similar antiseptics
- Have open wounds or burns (unless advised by a doctor)
- Have a rare skin condition that makes you sensitive to antiseptics
Can I use chlorhexidine if I’m pregnant or breastfeeding?
Chlorhexidine is generally safe during pregnancy and breastfeeding, but consult your doctor if using it regularly.
What if I miss a dose?
If you forget to use chlorhexidine, apply it as soon as you remember. If it’s close to your next use, skip the missed one—do not use extra to make up for it.
How effective is chlorhexidine?
Chlorhexidine is highly effective at killing bacteria and preventing infections when used as directed.
What should I do if I use too much?
Using too much chlorhexidine can cause skin irritation, burning, or changes in taste (if used in the mouth). If symptoms persist, seek medical advice.
What dose of chlorhexidine is usually taken?
- For mouth infections: Rinse with 10ml (0.2% solution) twice daily after brushing teeth
- For wound cleansing: Apply a small amount to the affected area, as directed
- For skin disinfection: Use before surgical procedures or injections
Your doctor or pharmacist will determine the correct dose based on your condition.
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What are the side effects of chlorhexidine?
Common side effects include:
- Mild skin irritation or dryness
- Temporary staining of teeth (when used as a mouth rinse)
- Changes in taste
- Burning or tingling sensation
Serious side effects, such as severe allergic reactions or breathing difficulties, require urgent medical attention.
How should I use chlorhexidine?
Chlorhexidine is available as mouthwash, skin cleanser, gels, sprays, and wipes. Follow the instructions for your specific formulation.
When should chlorhexidine be used?
- For oral care: After brushing, avoiding food or drink for 30 minutes
- For wound care: As needed, according to medical advice
- For skin disinfection: Before procedures or as recommended
What are the brand names for chlorhexidine?
Chlorhexidine is available as a generic antiseptic, but some branded versions include:
- Corsodyl (mouthwash and gel)
- Hibiscrub (skin cleanser)
- Savlon Antiseptic Cream (contains chlorhexidine with other ingredients)
Final thoughts
Chlorhexidine is an effective antiseptic that prevents infections in wounds, skin, and oral health. To get the best results, use it as directed, and if irritation occurs, speak to your doctor or pharmacist.
