I've been taking Sulfameth/Trimeth DS 800/160 for about 9 days for a kidney infection. For the past 3 days my throat has been bothering me. It feels like I have tonsilitis (which I get a lot), but I don't see how I could since this is an anti-biotic. My throat is burning it feels swollen, dry, scratchy and my voice has been going out. My jaws are getting sore too, like I've been clenching them or something.