upper respiratory tract infection
"I was prescribed this antibiotic having had flu like symptoms with a high fever.  Within an hour of taking it I had a horrid bitter bile taste in my mouth then felt as if I had been put on waltzer at the funfair and spun around 100 times, a terrible and restless night, the second night was slightly better and I'm about to embark on my third night, feeling extremely weak and listless - but as of this morning 36 hours later I can breathe to the bottom of my lungs for the first time in about 15 years. A tip for vile taste - slice a Granny Smith apple and nibble when needed. I'm going to try and grit my teeth and and complete the course as I had forgotten what it is like to properly fill my lungs"