6 doctors weighed in:

Hello I am having a mild allergic reaction to some cake i was wondering if taking one 10 mg tablet of loratadine would be ok. I already took one about 3 hours ago for 24 hour relief of sinus allergies but I was wondering if taking another one right now wo

6 doctors weighed in
Dr. Corey Clay
Internal Medicine - Allergy & Immunology
5 doctors agree

In brief: Not the best option

If true food allergy (antibody mediated), then second generation antihistamines (Loratadine, Zyrtec, Allegra) are of little benefit.
Itching/hives from foods occur rapidly (usually within 30minutes and certainly within 2 hours) and disappear rapidly. First generation meds like Benadryl (diphenhydramine) work much more quickly. If other symptoms (breathing, dizziness, nausea), injected epi is critical. (see comment)

In brief: Not the best option

If true food allergy (antibody mediated), then second generation antihistamines (Loratadine, Zyrtec, Allegra) are of little benefit.
Itching/hives from foods occur rapidly (usually within 30minutes and certainly within 2 hours) and disappear rapidly. First generation meds like Benadryl (diphenhydramine) work much more quickly. If other symptoms (breathing, dizziness, nausea), injected epi is critical. (see comment)
Thank
1 comment
Dr. Corey Clay
Zyrtec and Allegra begin to work more quickly than Loratadine and have a slightly stronger effectiveness; so they can be added to ensure hives don't return once the Benadryl wears off. Remember that food allergy typically worsens with subsequent exposures and this is caused by immune memory. If you think you've had a food allergy, then see an Allergist to confirm, discuss risk, and plan strategy.
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