Consider taking a single dose of an oral antihistamine such as Benadryl, Allegra, Zyrtec, or Claritin as quickly as possible. This may help the local reaction and possibly reduce the chance or lessen ...
This is because all second-generation antihistamines are more likely to cause side effects (like sleepiness, anxiety, and tremors) in older people. For children under 2: One half (2.5 mg) to one (5 mg ...