Cefdinir
"I've had roughly 8 sinus infections over the past 20 years and this is the first time I've been prescribed Cefdinir. I've taken it as prescribed, one pill every 12 hours, for the past 24 hours.  Unknown if this is working on my sinusitis, as my attention is now 110% focused on the most horrific and violent case of perpetual diarrhea I've ever experienced. Colonoscopy prep doesn't compare to this. The prescribing doctor and I will be having a conversation when the clinic opens later today."