a) An injection containing 10 mg ibuprofen

P1S1S3

Ibuprofen tablets are P1, but any poison which is in an injectable form goes under the category of

"Pharmaceutical products for human parenteral administration containing the following or their salts, as active ingredients, except in mixture with insulin— "

Ibuprofen injection is a hospital only item (usually not found in lists of registered products). It can be used in patent ductus arteriosus in preterm newborn infants because like indomethacin it is a prostaglandin inhibitor. Ref