What is Zilactin-B® (benzocaine topical) used for?
Benzocaine is a local anesthetic (numbing medication). It works by blocking nerve signals in your body.
Zilactin-B® is used to reduce pain or discomfort caused by minor skin irritations, sore throat, sunburn, teething pain, vaginal or rectal irritation, ingrown toenails, hemorrhoids, and many other sources of minor pain on a surface of the body. Benzocaine is also used to numb the skin or surfaces inside the mouth, nose, throat, vagina, or rectum to lessen the pain of inserting a medical instrument such as a tube or speculum.
How should I take Zilactin-B® (benzocaine topical)?
Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.
Use the smallest amount of medicine needed to numb the skin or relieve pain. Do not use large amounts of benzocaine topical, or cover treated skin areas with a bandage or plastic wrap without medical advice.
Your body may absorb more of this medicine if you use too much, if you apply it over large skin areas, or if you apply heat, bandages, or plastic wrap to treated skin areas. Skin that is cut or irritated may also absorb more topical medication than healthy skin.
Do not use benzocaine topical to treat large skin areas or deep puncture wounds. Avoid using the medicine on skin that is raw or blistered, such as a severe burn or abrasion.
Read all patient information, medication guides, and instruction sheets provided to you. Ask your doctor or pharmacist if you have any questions.
To treat minor skin conditions, apply a thin layer of benzocaine topical to the affected area. If using the spray, hold the container 6 to 12 inches away from the skin. Do not spray this medication onto your face. Spray it instead on your hands and then rub it onto the face, avoiding contact with your eyes.
To treat hemorrhoids, apply the medication up to 6 times per day.
Clean the area with soap and water before applying benzocaine topical. Wash your hands before and after inserting a rectal suppository.
Do not take a rectal suppository by mouth. It is for use only in your rectum
Try to empty your bowel and bladder just before using the benzocaine suppository.
Remove the wrapper before inserting the suppository. Avoid handling the suppository too long or it will melt in your hands. Lie on your back with your knees up toward your chest. Gently insert the suppository into your rectum about 1 inch, pointed tip first.
For best results, stay lying down for a few minutes. The suppository will melt quickly and you should feel little or no discomfort while holding it in. Avoid using the bathroom for at least an hour after using the suppository.
Call your doctor if your symptoms do not improve or if they get worse within the first 7 days of using benzocaine topical. Also call your doctor if your symptoms had cleared up but then came back.
If you are treating a sore throat, call your doctor if the pain is severe or lasts longer than 2 days, especially if you also develop a fever, headache, skin rash, swelling, nausea, vomiting, cough, or breathing problems.
How do I store Zilactin-B® (benzocaine topical)?
Zilactin-B® is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Zilactin-B® in the bathroom or the freezer. There may be different brands of Zilactin-B® that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.
You should not flush Zilactin-B® down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.
Precautions & warnings
What should I know before using Zilactin-B® (benzocaine topical)?
Before using this drug, tell your doctor if:
- You are pregnant or breastfeeding. This is because, while you are expecting or feeding a baby, you should only take medicines on the recommendation of a doctor.
- You are taking any other medicines. This includes any medicines you are taking which are available to buy without a prescription, such as herbal and complementary medicines.
- You have allergy with any of active or inactive ingredients of Zilactin-B® or other medications.
- You have any other illnesses, disorders, or medical conditions.
Do not use benzocaine topical if you have ever had methemoglobinemia in the past.
An overdose of numbing medications can cause fatal side effects if too much of the medicine is absorbed through your skin and into your blood. This is more likely to occur when using a numbing medicine without the advice of a medical doctor (such as during a cosmetic procedure like laser hair removal). Be aware that many cosmetic procedures are performed without a medical doctor present.
It is not known whether benzocaine topical will harm an unborn baby. Ask a doctor before using this medicine if you are pregnant.
It is not known whether benzocaine topical passes into breast milk or if it could affect a nursing baby. Ask a doctor before using this medicine if you are breast-feeding.
Do not use this medicine on a child younger than 2 years old without medical advice.
Is it safe during pregnancy or breastfeeding?
There are no adequate studies in women for determining risk when using Zilactin-B® during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking Zilactin-B®. Zilactin-B® is pregnancy risk category C, according to the US Food and Drug Administration (FDA).
FDA pregnancy risk category reference below:
- A=No risk
- B=No risk in some studies
- C=There may be some risk
- D=Positive evidence of risk
What side effects can occur from Zilactin-B® (benzocaine topical)?
Signs and symptoms may occur within minutes or up to 2 hours after using benzocaine topical in the mouth or throat. Get emergency medical help if you have:
- Headache, tired feeling, confusion
- Fast heart rate
- Feeling light-headed or short of breath
- Pale, blue, or gray appearance of your skin, lips, or fingernails
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using benzocaine topical and call your doctor at once if you have:
- Severe burning, stinging, or sensitivity where the medicine is applied
- Swelling, warmth, or redness
- Oozing, blistering, or any signs of infection.
Common side effects may include:
- Mild stinging, burning, or itching where the medicine is applied
- Skin tenderness or redness
- Dry white flakes where the medicine was applied
Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.
What drugs may interact with Zilactin-B® (benzocaine topical)?
Zilactin-B® may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.
Does food or alcohol interact with Zilactin-B® (benzocaine topical)?
Zilactin-B® may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.
What health conditions may interact with Zilactin-B® (benzocaine topical)?
Zilactin-B® may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.
Health conditions that may interact with this drug are:
- Asthma, bronchitis, emphysema, or other breathing disorder
- Heart disease
- A personal or family history of methemoglobinemia, or any genetic (inherited) enzyme deficiency
- If you smoke
The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using Zilactin-B® (benzocaine topical).
What is the dose of Zilactin-B® (benzocaine topical) for an adult?
Consult your doctor for further information.
What is the dose of Zilactin-B® (benzocaine topical) for a child?
The dosage has not been established in pediatric patients. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.
How is Zilactin-B® (benzocaine topical) available?
Zilactin-B® is available in the following dosage forms and strengths:
What should I do in case of an emergency or overdose?
In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.
What should I do if I miss a dose?
If you miss a dose of Zilactin-B®, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.
Hello Health Group does not provide medical advice, diagnosis or treatment.
Review Date: November 16, 2017 | Last Modified: December 19, 2019
Zilactin-B®. https://www.drugs.com/mtm/zilactin-b.html. Accessed November 16, 2017
Zilactin-B®. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=34ce5d91-35ff-4f2c-9d6b-ac389895b6b2. Accessed November 16, 2017