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A member asked:
Can i have anaphylaxis reaction to omnicef (cefdinir) days after starting or would it be immediate?
2 doctors weighed in across 2 answers
Anaphylaxis: If you are allergic it will happen immediately, but you may still have a delayed reaction, such as a rash within says of starting the antibiotic.
Answered 1/8/2018
5k views
Drug Reactions: Most allergic reactions occur within hours to two weeks after taking the medication and most people react to medications to which they have been exposed in the past. This process is called "sensitization." however, rashes may develop up to six weeks after starting certain types of medications.
Answered 1/8/2018
5k views
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