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Medications and Drugs

Brand Names: Carb-O-Lac HP, Carb-O-Lac5, Ultralytic, Ultralytic 2

Generic Name: ammonium lactate and urea (topical) (Pronunciation: a MOE nee um LAK tate and YOO ree a TOP i kal)

What is ammonium lactate and urea topical (Carb-O-Lac HP, Carb-O-Lac5, Ultralytic, Ultralytic 2)?

Ammonium lactate is a moisturizer.

Urea loosens thick or scaly skin cells and allows them to shed.

The combination of ammonium lactate and urea topical (for the skin) is used to treat rough or scaly skin caused by such conditions as eczema or psoriasis. This medicine will also help soften cracked skin or calluses.

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

What are the possible side effects of ammonium lactate and urea (Carb-O-Lac HP, Carb-O-Lac5, Ultralytic, Ultralytic 2)?

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

Less serious side effects may include:

  • stinging;
  • burning;
  • itching; or
  • other 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.

What is the most important information I should know about ammonium lactate and urea (Carb-O-Lac HP, Carb-O-Lac5, Ultralytic, Ultralytic 2)?

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

Before using this medication, tell your doctor about any other medications you are using on your skin.

Use this medication exactly as it was prescribed for you. Do not use the medication in larger amounts, or use it for longer than recommended by your doctor.

Apply ammonium lactate and urea to the skin in the amount your doctor has prescribed for you. Rub the medicine in gently until it is completely absorbed.

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

Avoid exposure to sunlight or tanning beds. This medicine can make you sunburn more easily. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors.

Avoid using skin products that can cause irritation, such as harsh soaps or skin cleansers, or skin products with alcohol, spices, astringents, or lime. Avoid using other medications on the areas you treat with ammonium lactate and urea unless your doctor tells you to.

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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