A 30-year-old female asked:
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how long dose it take to have an allergic reaction to a medication if it is you're first time taking the medication?

1 doctor answer
Dr. Ronald Krauser
51 years experience Rheumatology
Usually forever: It is very rare to have an allergic reaction the first time one takes a medication.
Answered on May 30, 2014
1
1 comment
Dr. Gregory Gilbert
22 years experience Emergency Medicine
Until the next time you take the medication! ;-)
May 30, 2014

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Related questions:

A 30-year-old female asked:
Dr. Ronald Krauser
51 years experience Rheumatology
See details: I depends on the half-life of the medication, In order words, how long the med stays in your system.
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Dr. Linda Green
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Varies: Most allergic reactions to medication occur after 1 or 2 doses but sometimes it can take a week or more to develop.
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