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How Long Does It Take Sulfamethoxazole To Work?

Updated July 24, 2021
Darothy Edlin Says:
Thu, June 2, 2016

My husband has been on this medication for 2 days and still feels terrible. How long should it be before he feels better? Thanks

1 Reply

1
Verwon Says:
Fri, June 3, 2016

Hello, Darothy! How are you? Has there been any change, yet?

The general rule with antibiotics is that if they are working, you shouldn't see any worsening of the infection after taking them for a full 24 hours and you should start to see improvement after taking them for a full 72 hours.

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

Is there anything else I can help with?

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