The supplement dose used in trials comes with a painkiller here
One US product combines ibuprofen with glucosamine and chondroitin. Its ceiling of six capsules a day delivers both trial doses and 600 mg of ibuprofen with them.
What the study found
Reaching both trial doses from this capsule means 600 mg of ibuprofen
One US capsule combines ibuprofen with glucosamine and chondroitin, giving them different regulatory purposes on one panel: Analgesic for the drug, Dietary Supplement for the other two. Its ceiling of six capsules a day delivers both trial doses, and 600 mg of ibuprofen with them.
The caveat · One brand's label, not US rules
This is one manufacturer's label, so its choices are evidence about this product rather than about US labelling rules in general. The document also disagrees with itself: the index title says tablet where the Drug Facts panel and carton say capsule, and three different effective dates appear in it.