Urea, in Visit Clinic

Urea is a soluble, non-toxic nitrogenous waste produced in the liver during protein metabolism (urea cycle) to safely dispose of ammonia. It travels in the bloodstream to the kidneys and is excreted in urine. Blood urea levels help assess kidney and liver function; elevated levels may indicate impaired renal clearance, dehydration, or increased protein breakdown.

Urea is mainly used in topical dermatology as a keratolytic and humectant to treat dry, rough, or scaly skin. It softens and exfoliates thickened skin (calluses, corns, hyperkeratosis), improves skin hydration in conditions like eczema, psoriasis, and ichthyosis, and can help with brittle nails. Concentrations vary: low for moisturizing, higher for debridement.

Urea is an organic compound with chemical formula CO(NH2)2, often written as CH4N2O or (NH2)2CO. Its molar mass is 60.06 g/mol. Urea is produced in the liver via the urea cycle to remove ammonia and is the main nitrogenous waste in urine. It’s widely used in fertilizers, animal feed, and various industrial and medical applications.

No — urea is one chemical component of urine, not the same as urine. Urea is a small nitrogen-containing molecule produced by the liver to remove ammonia. Urine is a complex aqueous waste fluid containing urea, water, salts, creatinine, metabolites, and cells or microbes; it carries dissolved wastes for excretion. Urea also has medical and industrial uses.

If blood urea (BUN) is high it often signals reduced kidney clearance or dehydration. Causes include acute or chronic kidney injury, high-protein intake, heart failure, GI bleeding, or certain medications. Symptoms range from none to fatigue, confusion, swelling, or nausea. Management: repeat tests, check creatinine/eGFR, rehydrate if appropriate, adjust meds and treat the underlying cause. See a doctor promptly.

Urea cycle disorder (often called "urea disease") is a group of inherited enzyme defects in the liver’s urea cycle that prevent normal conversion of ammonia to urea. Ammonia accumulates, causing nausea, vomiting, lethargy, developmental delay, and seizures. Management includes low‑protein diet, medications that remove nitrogen (scavengers), urgent ammonia-lowering measures, and sometimes liver transplantation.