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Ammonium lactate and urea (topical)

Generic name: ammonium lactate and urea (topical) (a MOE nee um LAK tate and YOO ree a TOP i kal)
Brand name: Carb-O-Lac HP, Carb-O-Lac5, Ultralytic, Ultralytic 2, Utralytic
Dosage forms: topical cream (10%-20%; 12%-20%; 5%-20%); topical foam (12%-20%)
Drug class: Topical emollients

Medically reviewed by Drugs.com on Dec 15, 2020. Written by Cerner Multum.

What is ammonium lactate and urea topical?

Ammonium lactate and urea topical (for the skin) is a combination medicine that is used to treat rough or scaly skin and soften cracked skin or calluses.

Ammonium lactate and urea may also be used for purposes not listed in this medication guide.

Warnings

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

Before taking this medicine

You should not use ammonium lactate and urea if you have ever had an allergic reaction to ammonium lactate or urea.

Ask a doctor or pharmacist if this medicine is safe to use if you have ever had an allergy to food, medicine, dyes, or preservatives.

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

How should I use ammonium lactate and urea?

Use exactly as directed on the label, or as prescribed by your doctor.

Do not take by mouth. Topical medicine is for use only on the skin.

Apply only a thin film to the affected skin. For best results, apply this medicine right after a bath or shower, while your skin is still damp. You may cover the treated skin with a bandage or gauze.

Store at room temperature away from moisture and heat. Keep the bottle tightly closed when not in use.

What happens if I miss a dose?

Apply the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not apply two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while using ammonium lactate and urea?

Avoid using ammonium lactate and urea on open wounds or burns, or on skin that is sensitive, irritated, or infected.

Avoid getting the medicine in your eyes, nose, mouth, or on your lips. If this does happen, rinse with water.

Avoid using other medications on the areas you treat with ammonium lactate and urea, unless your doctor tells you to.

Ammonium lactate and urea side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Less serious side effects may include:

  • stinging;

  • rash; or

  • skin irritation.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Ammonium lactate and urea dosing information

Usual Adult Dose for Dermatitis:

Ammonium lactate-urea topical 12%-20% cream and Ammonium lactate-urea topical 12%-20% foam:
Apply topically 2 times daily. Rub in until completely absorbed.

Ammonium lactate-urea topical 5%-20% topical cream:
Apply topically 2 times daily.

Usual Adult Dose for Eczema:

Ammonium lactate-urea topical 12%-20% cream and Ammonium lactate-urea topical 12%-20% foam:
Apply topically 2 times daily. Rub in until completely absorbed.

Ammonium lactate-urea topical 5%-20% topical cream:
Apply topically 2 times daily.

Usual Adult Dose for Psoriasis:

Ammonium lactate-urea topical 12%-20% cream and Ammonium lactate-urea topical 12%-20% foam:
Apply topically 2 times daily. Rub in until completely absorbed.

Ammonium lactate-urea topical 5%-20% topical cream:
Apply topically 2 times daily.

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What other drugs will affect ammonium lactate and urea?

Medicine used on the skin is not likely to be affected by other drugs you use. But many drugs can interact with each other. Tell each of your healthcare providers about all medicines you use, including prescription and over-the-counter medicines, vitamins, and herbal products.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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