Wow. The ‘medicating animals’ trick* I learned as a child from Gerald Durell’s book about his zoo works great!
But leaves a sulky cat.
- any goo it won’t accept voluntarily can be smeared onto any patch of fur within tongue range. A paw is ideal.
Yeah, every now and then I’m given one of those “See? Maybe I AM smarter than you” human-to-cat moments.
Do be careful when medicating a cat. They have no compunctions about tearing off a human face. 
With best regards,
Stephen S. Mack