That is the stuff you want. It should be 40 mg/ml. Now we need approx. weights on your girls to be able to give you a dose. I use the range of 10-30 mg/kg from ratguide.com personally.I went to get some infant ibuprofen for my rat girls after their spays in case they dont give me pain meds. All they had for infants was infants concentrated drops Ibuprofen. Will this work? And how much should I be giving them?