Ways to give my kids medicine???

I have 15 month twin boys who BOTH throw up their medicine once I gave it to them no matter how many times I try.

I put a tiny bit in their bottles/zippy cup and they won’t drink them anymore because they notice. I honestly feel like I’ve tried everything.

At this point I don’t see them getting any better because they are refusing everything, can someone tell me maybe other ways to give them their medicine? They both have fever, runny nose & cough.

Or maybe natural ways they can get better?? Anything will help!!