PedsCalc Pro
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Use this page when you know you need an allergy medicine chart, but you first need help choosing the right chart route for the product in your house.
Cetirizine
Use this route when the product in hand is cetirizine and you need the age/weight chart plus safety notes.
Loratadine
Use this route when the product in hand is loratadine and you want a simpler once-daily chart.
Fexofenadine
Use this route when the product in hand is fexofenadine and you need the water-versus-juice and antacid reminders.
Diphenhydramine
Use this route when the product in hand is diphenhydramine and you need the chart with short-term rescue cautions in view.
Use the OTC chart when you want label-aware parent guidance for a common over-the-counter product. Use the medication page when you want deeper safety detail, interactions, and dose details for that medicine.
Diphenhydramine is more often treated as a short-term rescue medicine because sedation and dosing confusion are common concerns, especially when other cough-and-cold products are also around.
Only if the active ingredient and exact formulation match. Brand names can be misleading, so confirm whether the product is cetirizine, loratadine, fexofenadine, or diphenhydramine before using any chart.
Start with the allergy hub or the "best allergy medicine for kids" chooser page first, then move into the chart for the product you actually plan to use.