Disinfectant and antiseptic
Chlorhexidine Pronunciation klɔː(r)ˈhɛksɪdiːn Trade names Betasept, ChloraPrep, Chlorostat, others Other names CHX, CHG, 1,6-bis(4-chloro-phenylbiguanido)hexane AHFS /Drugs.com Monograph License data
Pregnancy category Routes of administration Topical ATC code Legal status
AU : S5, S6, S7
US : OTC / Rx-only
N ,N′ ′ ′ ′ 1,6-Hexanediylbis[N′ -(4-chlorophenyl)(imidodicarbonimidic diamide)]
CAS Number PubChem CID DrugBank ChemSpider UNII KEGG ChEBI ChEMBL CompTox Dashboard (EPA ) ECHA InfoCard 100.000.217 Formula C 22 H 30 Cl 2 N 10 Molar mass 505.45 g·mol−1 3D model (JSmol ) Melting point 134 to 136 °C (273 to 277 °F) Solubility in water 0.8
Clc1ccc(NC(=N)NC(=N)NCCCCCCNC(=N)NC(=N)Nc2ccc(Cl)cc2)cc1
InChI=1S/C22H30Cl2N10/c23-15-5-9-17(10-6-15)31-21(27)33-19(25)29-13-3-1-2-4-14-30-20(26)34-22(28)32-18-11-7-16(24)8-12-18/h5-12H,1-4,13-14H2,(H5,25,27,29,31,33)(H5,26,28,30,32,34)
Y Key:GHXZTYHSJHQHIJ-UHFFFAOYSA-N
Y
(verify)
Chlorhexidine [ 1] is a disinfectant and antiseptic with the molecular formula C22 H30 Cl2 N10 , which is used for skin disinfection before surgery and to disinfect surgical instruments .[ 2] It is also used for cleaning wounds , preventing dental plaque , treating yeast infections of the mouth , and to keep urinary catheters from blocking.[ 3] It is used as a liquid or a powder.[ 2] [ 3] It is commonly used in salt form, either the gluconate [ 4] or the acetate .[ 5]
Side effects may include skin irritation, tooth discoloration, and allergic reactions ,[ 3] although apart from discoloration the risk appears to be the same as povidone-iodine .[ 6] [ 7] Chlorhexidine rinse is also known to have a bitter metallic aftertaste. Rinsing with water is not recommended as it is known to increase the bitterness.[ 8] It may cause eye problems if direct contact occurs.[ 9] [ 10] Use in pregnancy appears to be safe.[ 11] Chlorhexidine may come mixed in alcohol ,[ 12] [ 13] [ 14] water, or surfactant solution .[ 3] It is effective against a range of microorganisms , but does not inactivate spores .[ 2]
Chlorhexidine came into medical use in the 1950s[ 15] and is available over the counter in the United States .[ 9] It is on the World Health Organization's List of Essential Medicines .[ 16] [ 17] In 2021, it was the 247th most commonly prescribed medication in the United States, with more than 1 million prescriptions.[ 18] [ 19]
^ Varoni E, Tarce M, Lodi G, Carrassi A (September 2012). "Chlorhexidine (CHX) in dentistry: state of the art" . Minerva Stomatologica . 61 (9): 399–419. PMID 22976567 . Archived from the original on 30 September 2021. Retrieved 30 September 2021 .
^ a b c World Health Organization (2009). Stuart MC, Kouimtzi M, Hill SR (eds.). WHO Model Formulary 2008 . World Health Organization. pp. 321–22. hdl :10665/44053 . ISBN 9789241547659 .
^ a b c d British national formulary : BNF 69 (69 ed.). British Medical Association. 2015. pp. 568, 791, 839. ISBN 9780857111562 .
^ "Chlorhexidine Gluconate" . PubChem . Retrieved 1 July 2023 .
^ "Chlorhexidine Acetate" . PubChem . Retrieved 1 July 2023 .
^ Wade RG, Bourke G, Wormald JC, Totty JP, Stanley GH, Lewandowski A, et al. (November 2021). "Chlorhexidine versus povidone-iodine skin antisepsis before upper limb surgery (CIPHUR): an international multicentre prospective cohort study" . BJS Open . 5 (6): zrab117. doi :10.1093/bjsopen/zrab117 . PMC 8677347 . PMID 34915557 .
^ Wade RG, Burr NE, McCauley G, Bourke G, Efthimiou O (December 2021). "The Comparative Efficacy of Chlorhexidine Gluconate and Povidone-iodine Antiseptics for the Prevention of Infection in Clean Surgery: A Systematic Review and Network Meta-analysis" . Annals of Surgery . 274 (6): e481–e488. doi :10.1097/SLA.0000000000004076 . PMID 32773627 . S2CID 225289226 .
^ "Chlorhexidine (Oral Route) Precautions - Mayo Clinic" . www.mayoclinic.org . Retrieved 27 June 2023 .
^ a b "Chlorhexidine Gluconate topical" . The American Society of Health-System Pharmacists. Archived from the original on 13 January 2017. Retrieved 8 January 2017 .
^ Tabor E, Bostwick DC, Evans CC (January 1989). "Corneal damage due to eye contact with chlorhexidine gluconate". JAMA . 261 (4): 557–558. doi :10.1001/jama.1989.03420040091021 . PMID 2909794 .
^ Briggs GG, Freeman RK, Yaffe SJ (2011). Drugs in Pregnancy and Lactation: A Reference Guide to Fetal and Neonatal Risk . Lippincott Williams & Wilkins. p. 252. ISBN 9781608317080 . Archived from the original on 13 January 2017.
^ "Prevantics Swab- chlorhexidine gluconate and isopropyl alcohol solution" . DailyMed . 26 October 2022. Archived from the original on 24 January 2023. Retrieved 24 January 2023 .
^ "Prevantics Swab- chlorhexidine gluconate and isopropyl alcohol solution" . DailyMed . 26 October 2022. Archived from the original on 24 January 2023. Retrieved 24 January 2023 .
^ "Prevantics Maxi Swabstick- chlorhexidine gluconate and isopropyl alcohol solution" . DailyMed . 26 October 2022. Archived from the original on 24 January 2023. Retrieved 24 January 2023 .
^ Schmalz G, Bindslev DA (2008). Biocompatibility of Dental Materials . Springer Science & Business Media. p. 351. ISBN 9783540777823 . Archived from the original on 13 January 2017.
^ World Health Organization (2019). World Health Organization model list of essential medicines: 21st list 2019 . Geneva: World Health Organization. hdl :10665/325771 . WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.
^ World Health Organization (2021). World Health Organization model list of essential medicines: 22nd list (2021) . Geneva: World Health Organization. hdl :10665/345533 . WHO/MHP/HPS/EML/2021.02.
^ "The Top 300 of 2021" . ClinCalc . Archived from the original on 15 January 2024. Retrieved 14 January 2024 .
^ "Chlorhexidine - Drug Usage Statistics" . ClinCalc . Retrieved 14 January 2024 .