Benzocaine: The Quick-Acting Soothe Solution

What is Benzocaine?
Benzocaine is your go-to local anesthetic, renowned for its ability to quickly numb the area it’s applied to. With a structure that boasts a benzene ring attached to an ester group, this powerful agent effectively blocks nerve signals, offering relief from discomfort and pain.


  • Got a pesky toothache or mouth ulcer? Dab some benzocaine-based oral gel for rapid relief.
  • Teething babies? Benzocaine gels can ease their discomfort.
  • Sore throat? Many lozenges contain benzocaine to soothe that scratchy feeling.
  • Sunburns and minor skin irritations? It’s got you covered!
  • Earaches? A few drops of a benzocaine preparation can alleviate the pain.

Safety First!
While benzocaine is generally safe, it’s essential to use it as directed. In rare cases, excessive use can lead to methemoglobinemia, affecting the blood’s oxygen-carrying capability. Always keep it away from the eyes, and it’s not meant for intravenous use. If you notice any allergic reactions like itching or redness, stop use and consult a doctor.

Keep it cool and dry, away from direct sunlight. And remember, keep out of the reach of children.


This like all the products from EU RC are shipped on Tuesday by express mail without tracking number,
to European countries ONLY.

Benzocaine Technical Product Description

Chemical Name: Benzocaine

IUPAC Name: Ethyl 4-aminobenzoate

CAS Number: 94-09-7

Molecular Formula: C9H11NO2

Molecular Weight: 165.19 g/mol

Physical Properties:

  • State: Solid at room temperature
  • Melting Point: 88-90°C
  • Boiling Point: 310°C
  • Solubility: Slightly soluble in water, freely soluble in alcohol, ether, and chloroform.

Chemical Properties:

  • pKa: 2.7
  • LogP: 1.86

Structure: Benzocaine is composed of a benzene ring connected to an ester functional group.

Mechanism of Action: Benzocaine is a local anesthetic which acts by blocking the voltage-gated sodium channels in the nerve cell membrane. By inhibiting the ionic fluxes required for the initiation and conduction of impulses, benzocaine stabilizes the neuronal membrane and causes a loss of sensation.


  1. Dental Procedures: Used as a topical agent to relieve pain during dental treatments.
  2. Oral Gels: Used to treat mouth ulcers and soothe teething pain in infants.
  3. Over-the-counter preparations: Found in products for relief from sore throats, sunburn, and minor skin irritations.
  4. Ear Drops: Employed to alleviate pain from ear infections.

Safety Information:

  • LD50 (oral, rat): 1,710 mg/kg
  • Overdose or prolonged application may result in methemoglobinemia, a condition where the blood cannot effectively carry oxygen. Symptoms include shortness of breath, blue-gray discoloration of the skin and mucous membranes, and fatigue.
  • Avoid contact with the eyes. In case of contact, rinse immediately with plenty of water and seek medical attention.
  • Not for intravenous use.

Storage: Store in a cool, dry place, away from direct sunlight and moisture. Keep out of reach of children.

Shelf Life: 5 years from the manufacturing date when stored under recommended conditions.


  • Always use as directed by a healthcare professional.
  • Benzocaine may cause allergic reactions in some individuals. Discontinue use and seek medical attention if you experience itching, redness, swelling, or rashes.
  • Do not use on broken or inflamed skin.

Quality Control: Benzocaine products undergo rigorous testing to ensure their purity, potency, and safety. These tests include high-performance liquid chromatography (HPLC) for purity, infrared (IR) spectroscopy for molecular confirmation, and various assays to determine potency.

Conclusion: Benzocaine is a versatile local anesthetic with a wide range of medical and over-the-counter applications. Its unique chemical and pharmacological properties make it a valuable tool for pain and itch relief in various conditions. Always ensure you are sourcing high-quality benzocaine from reputable suppliers and use it as directed for maximum safety and efficacy.


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