15
Dec
How Long Does A Drug Allergy Reaction Last. It should probably fade fairly quickly if it was a first time use reaction. Pledge is right. Allergic reactions may last for varying lengths of time. In some cases it could happen.
How long does it take to have an allergic reaction to a drug. Similarly how long does an allergic reaction to sulfa last. Anaphylaxis is a sudden life-threatening whole-body reaction to a drug or other allergen. An antibiotic medication allergy is a harmful reaction to an antibiotic. Healthcare providers cannot know ahead of time if you will have an allergic reaction. People with severe reactions may take a long time to get better especially if they are elderly or have other medical conditions.
In some cases it could happen.
In some cases however a more severe reaction can occur. Click to see full answer. Depends on the type of reaction. Typically it takes from 12 hours to 3 days. They may take a few hours to a few days to disappear. Most of the time symptoms will appear between 1-2 hours after taking the drug unless you have a more rare delayed type reaction.