Dad saw on B and B Pharmacy's website that not only can they compound meds into liquids, they can make them into chewable treats or other edible forms, as well as a type of transdermal gel that can be applied behind the ear and absorbed through the skin. Per their web site:
Transdermal gels offer many advantages:
• Due to the excellent absorption of the drug, smaller amounts of drug can be given, which can greatly reduce the side effects your pet may experience.
• If your pet is on several medications, many drug interactions can be avoided when one or more of the medications are given through a gel.
• Numerous medications can easily be administered to pets who are nauseated or who may not be allowed to take anything by mouth.
It sounds very interesting but I'm not sure I want any gel getting on my nice long ears!