2 doctors weighed in:

How long does it take for sudafed to start working?

2 doctors weighed in
Dr. Gregory Bussell
ENT - Head & Neck Surgery
1 doctor agrees

In brief: About 30 minutes

Usually starts in 30 minutes and lasts about 8 hours depending on the dose.

In brief: About 30 minutes

Usually starts in 30 minutes and lasts about 8 hours depending on the dose.
Dr. Gregory Bussell
Dr. Gregory Bussell
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Dr. William Forsythe
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