A member asked:

Went to dr for possible sinus infection. been dizzy/lightheaded, sinus pressure, headache, ear ache. gave me amoxicillin 875 mg 3xday. been less than 48 hrs on it. today was more dizzy with sinus pressure. how long til it works?

A doctor has provided 1 answer

Dr. Michael Sparacino answered

At least 72 hours: It will take at least 72 hours take effect. It's difficult to establish adequate antibiotic levels inside sinuses because of their vascular anatomy.

Dr Ali agreed

Answered 11/1/2015

5.6k views

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A member asked:

Went to dr for possible sinus infection. been dizzy/lightheaded, sinus pressure, headache, ear ache. gave me amoxicillin 875 mg 3xday. been less than 48 hrs on it. today was more dizzy with sinus pressure. how long til it works?

A doctor has provided 1 answer

Dr. Michael Sparacino answered

Dr Ali agreed

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