Does strong-smelling urine mean an infection needing antibiotics?
Urine smell alone is insufficient to diagnose infection or justify antibiotics. Low fluid intake, food, medicines and supplements can affect odour. Burning, frequency, urgency, pain or fever changes the assessment and should be considered together.
Details
Review fluids and recent intake
Look for a link with coffee, particular foods or a new supplement. Without other symptoms, improving fluid intake within medical limits and observing may be sufficient. Do not stop prescribed medicines because of odour alone.
When is testing useful?
Symptoms, pregnancy, age and health determine whether testing is needed. Smell is assessed in context; leftover antibiotics should not be used. During pregnancy, obtain medical advice early for urinary symptoms.
Signs of more serious illness
Fever with flank pain, vomiting or feeling very unwell needs urgent assessment. Reduced urine, dizziness or inability to drink may indicate dehydration. Visible blood needs evaluation even when painless.
Related reading: What should I do if my urine turns red or contains blood?.