I'd like to add to this debate! 
I started off taking the no BS approach, this medicine is going in you so let's crack on with it. For my child, it didn't work. Physically holding and restraining him will I shoved a med syringe in his mouth did not work. Trust was gone, but I could live with that.
DS immediately threw up the medicine, was screaming and crying. His temp was higher because he was so upset. He cried for a good 2 hours. This was anti biotics for an infected spot/cyst on his back. Being sick wasn't deliberate, just his bodies reaction due to the anxiety and stress of the whole thing.
The spot has been infected 4 times now, last time swelling to the size of a golf ball. He tried his best to take calpol at the hospital while they put a line in his hand for surgery. I warned them not to try, if any goes in his mouth but he spits it or throws it up, they cannot then give him any more through a drip. Dr knows best but she ended up wearing the calpol. But my DS was still in pain and needed something.
His refusal is extreme and most definitely not deliberate. Whilst most kids will do as they're told when it comes to the crunch, a large proportion still struggle with this kind of issue. And a parenting forum is a place for advice when struggling.
Every parent knows their child best and how they respond to different approaches. It's great that we have such a diverse community of parents here, that we can give OP the benefit of our experiences. I think it crosses a line when we start to tell other parents what they should be doing, rather than what they could try.