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Medically reviewed by Last updated on Aug 17, 2020.

Dosage form: gel
Ingredients: benzocaine 0.1g in 1g
Labeler: Blairex Laboratories, Inc.
NDC Code: 50486-550

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Drug Facts

Active ingredient

Benzocaine 10%


Oral pain reliever


temporarily relieves pain caused by:

  • canker sores
  • minor mouth sores and gum irritations
  • denture and brace pain


  • keep away from fire or flame

Allergy Alert:
  • do not use this product if you have a history of allergy to local anesthetics such as procaine, butacaine, benzocaine or other “caine” anesthetics

Stop use and ask a physician if
  • sore mouth symptoms do not improve in 7 days
  • swelling, rash or fever develops
  • irritation, pain or redness persists or worsens
  • apply only to affected area
  • do not exceed recommended dosage
  • avoid contact with the eyes
  • do not use for more than 7 days unless directed by a physician or dentist

Keep out of reach of children. If swallowed, get medical help or contact a poison control center immediately.

adults and children
2 years and older
Dry affected area. Apply a thin coat of gel with cotton swab or clean finger up to 4 times daily. Allow to dry 30-60 seconds.
children under 12 years adult supervision should be given in the use of this product
children under 2 years do not use, consult a physician or dentist

Other information
  • do not peel off protective film. Attempting to peel off film may result in skin irritation or tenderness. To remove film, first apply another coat of Zilactin-B Long Lasting Mouth Sore Gel to film, and immediately wipe the area with a moist gauze pad or tissue.
  • contains alcohol 65% by volume
  • store at 15-30°C (59-86°F)

Inactive ingredients

Boric acid, hydroxypropylcellulose, propylene glycol, purified water, salicylic acid, SD alcohol 38-B, tannic acid

Manufactured for: Blairex Laboratories, Inc. P.O. Box 2127 Columbus, IN 47202 USA

Questions or Comments?
Call TOLL FREE 1-800-252-4739


Oral Pain Reliever

Zilactin®-B 6 Hour Canker & Mouth Sore Relief

  • Bioadhesive Promotes Healing
  • Eat and Drink Pain-Free for up to 6 Hours

Net wt. 0.25 oz (7g)

benzocaine gel
Product Information
Product TypeHUMAN OTC DRUGItem Code (Source)NDC:50486-550
Route of AdministrationTOPICALDEA Schedule    
Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
benzocaine (benzocaine) benzocaine0.1 g  in 1 g
Inactive Ingredients
Ingredient NameStrength
boric acid 
hydroxypropyl cellulose (type M) 
propylene glycol 
salicylic acid 
peppermint oil 
tannic acid 
#Item CodePackage Description
1NDC:50486-550-321 TUBE in 1 CARTON
17 g in 1 TUBE
Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
OTC monograph finalpart34606/29/2005
Labeler - Blairex Laboratories, Inc. (092575133)

Blairex Laboratories, Inc.