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Urea
Pronunciation
U.S. Brand Names
Generic Available
Canadian Brand Names
Synonyms
Pharmacological Index
Use
Pregnancy Risk Factor
Contraindications
Warnings/Precautions
Adverse Reactions
Overdosage/Toxicology
Drug Interactions
Mechanism of Action
Pharmacodynamics/Kinetics
Usual Dosage
Mental Health: Effects on Mental Status
Mental Health: Effects on Psychiatric Treatment
Dental Health: Local Anesthetic/Vasoconstrictor Precautions
Dental Health: Effects on Dental Treatment
Patient Information
Nursing Implications
Dosage Forms

Pronunciation
(yoor EE a)

U.S. Brand Names
Amino-Cerv™ Vaginal Cream; Aquacare® Topical [OTC]; Carmol® Topical [OTC]; Gormel® Creme [OTC]; Lanaphilic® Topical [OTC]; Nutraplus® Topical [OTC]; Rea-Lo®[OTC]; Ultra Mide® Topical; Ureacin®-20 Topical [OTC]; Ureaphil® Injection

Generic Available

Yes


Canadian Brand Names
Onyvul®; Uremol™; Urisec®; Velvelan®

Synonyms
Carbamide

Pharmacological Index

Diuretic, Osmotic; Keratolytic Agent; Topical Skin Product


Use

Reduces intracranial pressure and intraocular pressure; topically promotes hydration and removal of excess keratin in hyperkeratotic conditions and dry skin; mild cervicitis


Pregnancy Risk Factor

C


Contraindications

Severely impaired renal function, hepatic failure; active intracranial bleeding, sickle cell anemia, topical use in viral skin disease


Warnings/Precautions

Urea should not be used near the eyes; use with caution if applied to face, broken, or inflamed skin; use with caution in patients with mild hepatic or renal impairment


Adverse Reactions

1% to 10%:

Endocrine & metabolic: Electrolyte imbalance

Gastrointestinal: Nausea, vomiting

Local: Transient stinging, local irritation, tissue necrosis from extravasation of I.V. preparation


Overdosage/Toxicology

Increased BUN, decreased renal function; treatment is supportive


Drug Interactions

Decreased effect/toxicity/levels of lithium


Mechanism of Action

Elevates plasma osmolality by inhibiting tubular reabsorption of water, thus enhancing the flow of water into extracellular fluid


Pharmacodynamics/Kinetics

Onset of therapeutic effect: I.V.: Maximum effects within 1-2 hours

Duration: 3-6 hours (diuresis can continue for up to 10 hours)

Distribution: Crosses the placenta; appears in breast milk

Half-life: 1 hour

Elimination: Excreted unchanged in urine


Usual Dosage

Children: I.V. slow infusion:

<2 years: 0.1-0.5 g/kg

>2 years: 0.5-1.5 g/kg

Adults:

I.V. infusion: 1-1.5 g/kg by slow infusion (1-21/2 hours); maximum: 120 g/24 hours

Topical: Apply 1-3 times/day

Vaginal: Insert 1 applicatorful in vagina at bedtime for 2-4 weeks


Mental Health: Effects on Mental Status

None reported


Mental Health: Effects on Psychiatric Treatment

May decrease serum lithium levels but overall effect is minimal; do not use for lithium toxicity/overdose; if overdose is associated with severe clinical manifestations, dialysis is the treatment of choice


Dental Health: Local Anesthetic/Vasoconstrictor Precautions

No information available to require special precautions


Dental Health: Effects on Dental Treatment

No effects or complications reported


Patient Information

Topical: For external use only. Best effect is obtained when applied to skin while still wet or moist after washing or bathing. Do not apply to broken, inflamed, or infected skin. Do not use near eyes. Report skin redness, irritation, or worsening of condition. Breast-feeding precautions: Consult prescriber if breast-feeding.

Vaginal: Wash hands before using. Insert full applicator into vagina gently and expel cream at bedtime. Wash applicator with soap and water following use. Remain lying down for 30 minutes following administration. Report if condition worsens or does not improve.


Nursing Implications

Do not infuse into leg veins; injection dosage form may be used orally, mix with carbonated beverages, jelly or jam, to mask unpleasant flavor


Dosage Forms

Cream:

Topical: 2% [20 mg/mL] (75 g); 10% [100 mg/mL] (75 g, 90 g, 454 g); 20% [200 mg/mL] (45 g, 75 g, 90 g, 454 g); 30% [300 mg/mL] (60 g, 454 g); 40% (30 g)

Vaginal: 8.34% [83.4 mg/g] (82.5 g)

Injection: 40 g/150 mL

Lotion: 2% (240 mL); 10% (180 mL, 240 mL, 480 mL); 15% (120 mL, 480 mL); 25% (180 mL)


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