Most adults can safely take 200–400 mg of ibuprofen every 4–6 hours, but should not exceed 1,200 mg per day with over‑the‑counter (OTC) products unless a clinician specifically tells them otherwise. Under medical supervision with prescription‑strength ibuprofen, the absolute maximum is 3,200 mg per day, divided into several doses, but this higher range is only for specific conditions and only when a healthcare professional considers it appropriate.

Quick Scoop

  • For healthy adults using store‑bought ibuprofen:
    • Typical single dose: 200–400 mg every 4–6 hours as needed.
* Do not exceed: 1,200 mg total in 24 hours (for example, six 200 mg tablets).
  • With prescription ibuprofen:
    • Doses may be 400–800 mg per dose, several times per day.
* Absolute ceiling: 3,200 mg per 24 hours, only under medical supervision.

Important safety notes

  • Always use the lowest effective dose for the shortest time, especially if you have any heart, kidney, stomach, or bleeding issues, are over 60, are pregnant, or take blood thinners or other NSAIDs.
  • Stop and get urgent care or call your local poison service if:
    • You have taken more than the labeled maximum, or more than 3,200 mg in 24 hours.
* You have severe stomach pain, vomiting blood, black or bloody stools, chest pain, trouble breathing, confusion, or extreme drowsiness after taking ibuprofen.

How often and how long

  • Spacing:
    • Every 4–6 hours between doses is standard for adults.
  • Duration:
    • For fever: do not use longer than 3 days without medical advice.
* For pain: do not use longer than 10 days without medical advice.

Kids and special situations

  • Children’s ibuprofen dosing is based on weight and has different limits; always follow the pediatric product label or a pediatrician’s instructions.
  • People with kidney disease, stomach ulcers, bleeding problems, heart disease, in late pregnancy, or on certain medications may need lower limits or should avoid ibuprofen altogether.

If you have already taken ibuprofen and think you might be near or over the maximum, do not take more “to be safe”; instead, contact a doctor, urgent care, or a poison helpline right away for personalized advice.

Bottom note: This is general information and not a diagnosis or personal medical advice. For your exact safe maximum and whether ibuprofen is appropriate for you today, a local clinician or pharmacist should review your health conditions, other medicines, and symptoms.