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

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)