Pain medicines for kidney stones

Kidney-stone pain often starts in the flank or back and may move toward the abdomen or groin. Anti-inflammatory medicines can reduce inflammation around the ureter, but they are not suitable for everyone, particularly people with kidney disease, a history of stomach ulcer or bleeding, certain heart conditions, dehydration, or some pregnancy situations. Paracetamol may be an option for some people, but dose limits and liver health matter. Opioid medicines may be prescribed when other relief is unsuitable or insufficient; they can cause drowsiness, constipation, and dependence. Pain relief does not remove a stone or treat an infection.

Check the active ingredient on every packet to avoid doubling up products. Follow the label or prescriber's directions and do not combine anti-inflammatory medicines unless a clinician specifically tells you to. Drink normally and replace fluids if you have been losing them, but do not force fluids during severe colicky pain or if urine flow is reduced. A GP consultation can help confirm whether a stone is likely, review medicines, and arrange urine tests or an abdominal ultrasound. Keep a record of pain, urine output, fever, vomiting, and any medicine taken.

Seek urgent care for severe pain that is not controlled, fever or chills, repeated vomiting, confusion, faintness, blood in urine with worsening symptoms, or difficulty passing urine. A blocked ureter with infection can threaten kidney function. Get advice promptly if you have one functioning kidney, known kidney disease, are pregnant, or cannot keep fluids down. Do not keep increasing pain medicine while waiting for an assessment.

Ask which medicine and dose fit your kidney, stomach, liver, pregnancy, and bleeding risks; how long to use it; and which combinations to avoid. Ask whether you need imaging, what symptoms suggest obstruction, and what to do if pain returns after temporary relief.