Hi. For all of you who like me have spent hours trying to find out whether there is any difference between human Ibuprofen and the far more expensive dog Ibuprofen. You would think it would be easy to find out and you might think that vets are being deliberately obtuse to make you buy their products. Here is my answer. (based on what I have read) The chemical compound of both is the same, but (and its a big BUT. The absorbtion rates of ibuprofen in dogs and humans is very different) So while you may be able to work out the correct dosage for your dog in human Ibuprofen, the human type will not contain the slow release inhibitors that dog Ibuprofen carries. (Its even more critical with cats) Anyway, I hope this post will help fill the gaps in the information found online, and I hope I've got this right.