Comparing Cephalexin

For Skin or Soft Tissue Infection: I had a blister get infected on a cruise ship. The on board Dr put me on Cephalexen 4x daily at 500mg for 5 days. I've had insomnia from the get go. While awake, I had dizzy spells often, and bursts of anxiety. On night 3, I developed chills, and anxiety that woke me right up. I then vomited/diarrhea all night long. I'm currently awake on night 3 typing this. Chills have stopped but I'm holding nothing down.

For Skin or Soft Tissue Infection: I got a flu shot and the next morning I woke up with fever, pounding headache and a large red swelling on my arm with streaks that connected to the lymph nodes. I was diagnosed with cellulitis. I was clearly not swabbed well enough, if at all (can't remember). I started on 3 doses of Cephalexin 500 per day, but got worse the first day and ended up in ER. The ER doc bumped me up to 4 doses. It has pretty much cleared it up. The exhaustion has been horrific, and at times I'm dizzy. No diarrhea, but sometimes I become extremely nauseous. It strikes me out of nowhere. I find that taking Zantac helps. I'm also really, achy and all around unwell. One pill to go and I can't wait. But, the stuff works or I'd have developed sepsis, so all good.