★★☆Single study — solid evidence, such as one good trial or a large observational dataset, but not replicated at the top tier.
The daily limit on the box is not the limit a doctor can prescribe
United States labelling caps over-the-counter ibuprofen at 1,200 mg a day. Prescription regimens run 400 to 800 mg every six hours to a maximum of 3,200 mg.
What the study found
The shop shelf stops at 1,200 mg; the prescription pad goes to 3,200
Ibuprofen carries two different daily ceilings depending on who hands it to you. United States labelling sets the over-the-counter limit at 1,200 mg a day, while prescription regimens run 400 to 800 mg every six hours to a stated maximum of 3,200 mg.
The caveat · A reference summary, not a study
This is a reference monograph summarising labelling and formulary convention, not a study of what either ceiling does to anyone. The figures are United States labelling and differ by country. Monograph entries are revised continuously, so a later version may read differently.