Gosh, 7 pages. That shows us how many people are dealing with the same thing. Stubborn kids...
I haven't read thru it all so forgive me if I'm repetitive, but if I am that solution has at least 2 votes, eh?
I always try yogurt first (after checking the meds online to make sure that yogurt is not contraindicated) because it will help their body deal with antibiotics and is healthy anyway for anything else.
If that doesn't work, chocolate syrup, peanut butter, strawberry syrup (still have that in my cupboard, what do you do with it when the meds are done?). Then there's something called triple fish syrup which someone had success with on a stubborn kid, that would no doubt mask the taste & smell of the meds, yuch! I had
some success with fish liver oil for the kids who don't like sweet stuff ... I had success with a tough kid with vanilla International Delight coffee creamer too.
There's no absolute answer cause they're individuals.Trial & error sometimes. What the heck am I gonna do with this strawberry syrup???