Allergy pills
Most allergy medications are in the class of antihistamines.
How toxic is it?
Allergy pills have various side effects and the range of toxicity varies depending on the product. For example, second generation products like loratadine and cetirizine are generally well tolerated with few, if any, side effects, but diphenhydramine frequently causes drowsiness, even in small doses. They all have the potential to cause effects like seizures and cardiac arrhythmias.
Common brands & formats
Benadryl (diphenhydramine)
Zyrtec (cetirizine)
Claritin (loratadine)
Allegra (fexofenadine)
Forms: tablets, capsules, liquid
Diphenhydramine is available as a topical cream