How Long Do It Take Bactrim To Work (Top voted first)

I noticed a small lump behind my left ear Sunday. ByThursday, it was large, red, and very painful. My earlobe was swollen as well. Then I noticed the tenderness starting down the left side of my neck. I saw my Dr. yesterday and was diagnosed with cellulitis. She gave me Bactrim 800-160 twice daily. I took my two doses yesterday. When I woke this morning, my earlobe looks like it's gonna pop, the lump is no smaller and instead of just tenderness in the neck, there's swelling between the jaw and earlobe. My question is, does Bactrim take a few days to start seeing and feeling results? My Dr Office is closed due to the holiday weekend and I don't know who else to ask. Thanks

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Hello, Chris! How are you?

Has there been any improvement, yet?

The general rule with antibiotics is that, if they are working, you shouldn't see any worsening after taking it for a full 24 hours and you should start to see improvement after taking it for a full 3 days.

The FDA lists the typical side effects of antibiotics as possibly including nausea, dizziness, headache, diarrhea and non-allergic skin rash.

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Chris, I have the same thing and was prescribed Bactrim 800-160 twice daily. I have only had two doses with no sign of improvement. Actually, its a little worse today. Would you kindly tell me if this finally worked for you? I am considering the ER as I now have blisters on torso and arms. Thank you!

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