What is it? 
Benzocaine is classified as an ester anesthetic and used primarily as a topical anesthetic. 

How do I avoid it? 
You should avoid all products claiming topical relief of pain of itching unless the product is clearly labeled and Benzocine and Tetracaine are not included. Such agents can be used if they contain only Dibucaine or Lidocaine. You may have serious reaction to related anesthetic agents derived from Benzoic Acid when given by injection from dentists physicians, or other health care workers. You should be able to tolerate other chemically unrelated agents without difficulty, including Lidocaine and Mepivacine. Benzocaine and Tetracaine-sensitive persons may also have to avoid: 
• PABA and PABA esters containing sunscreens 
• permanent hair dye (p-Phenylenediamine) 
• certain diuretics or fluid pills (Hydrochlorothiazide) 
• oral antibiotic medications (Sulfonylureas) 
• certain antibiotics including sulfa drugs 
• azo and aniline dyes 
• important cardiac medication(Procainamide) 

• Skin Care Products 
  • Aftershave lotions  
  • Astringents and analgesics  
  • Burn and sunburn remedies  
  • Itching rash remedies, including poison ivy products 
  • Sunscreen preparations 
  • Cough / Sore throat tablets, drops, lozenges, and sprays  
  • Hemorrhoidal creams, suppositories, and enemas, teathing lotions, ear preparation, vaginal preparation 
  •  Oral and gum products for teething, toothache, canker sores, cold sores, and denture irritation and in oral antibacterial agents. 
  • Podiatric products for athlete’s foot, corns, calluses, and warts 
  • Ear drops 
  • Vaginal creams 
  • Medications 
  • Appetite suppressant 
Other names for Benzocaine: 
• Aethoform 
• Americaine 
• Anestesin 
• Anesthone 
• Cetacaine 
• Cincaine 
• Dibucaine 
• Dibucaine Hydrochloride 
• Ethyl aminobenzoate 
• Ethyl PABA 
• Ethyl p-aminobenzoate 
• Orthesin 
• P-Aminobenzoic acid (PABA_ ethyl ester 
• Parathesin 
• Percaine 
• Pontocaine 
• Sovcaine 
• Tetracaine

Potential cross reacting/co-reacting substances: 
• Other Ester Anesthetics 
• Butacaine 
• Butethamine HCl (monocaine) 
• Isobucaine 
• Meapaine 
• Meprylcaine (Oracaine) 
• Metabutethamine (Unacaine) 
• Neo-Orthoform 
• para-Aminobenzoic acid and glyceryl PABA 
• para-Aminosalicylic acid 
• Para-phenylenediamine 
• Procaine HCL (Novocain) 
• Oricaubanud (Pronestyl)—used for treating irregular heart rates 
• Propoxycaine (Ravocaine) with 2% Procaine 
• Sulfonamides 
• Tetracaine 
• AZO and anilinedyes 
• Dibucaine 
• Chloro procaine HCl (Nesacaine) 
• Hydrochlorothiazide 
• Sulfonylureas (chlorpropamide)

How safe is it?

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